Giants Select Caleb Kilian
The Giants announced their Opening Day roster moves today. Outfielder Jared Oliva and right-hander Caleb Kilian were selected to the 40-man. In corresponding moves, left-hander Reiver Sanmartin was placed on the 60-day injured list and outfielder Luis Matos has been designated for assignment. It had been reported yesterday that the Giants were likely to select Oliva and designate Matos. The Giants also announced that catcher Eric Haase has been released from his minor league deal and that Rule 5 catcher Daniel Susac has made the team.
Kilian, 29 in June, was signed to a minor league deal in the offseason. He had an impressive camp, tossing 9 1/3 innings while only allowing one earned run. He racked up 11 strikeouts while only issuing two walks.
That strong performance will allow him to make the roster of his original organization. Kilian was drafted by the Giants in 2019 but was flipped to the Cubs as part of the Kris Bryant trade in 2021. He only got to make eight appearances for the Cubs from 2022 to 2024. He was injured for most of 2025 and only made 11 minor league appearances.
Now that he appears to be healthy and pitching well, he’ll make it back to the big leagues. He is out of options and will have to be kept on the active roster or else removed from the 40-man entirely. He has less than a year of service time, so he can be retained for the long term if this season goes especially well.
The San Francisco bullpen has opportunities available because they traded Tyler Rogers and Camilo Doval last year and then lost Randy Rodríguez to Tommy John surgery. Their moves to replace those losses were mostly injury reclamation projects, such as Kilian himself.
Sanmartin’s transfer is not a surprise. A waiver claimee from November, it was reported a few weeks ago that he had suffered a significant hip flexor strain that was going to keep him out of action for at least three months.
Behind the plate, the Giants have Patrick Bailey but the backup job was up for grabs. In December’s Rule 5 draft, the Giants got Susac via a trade. The Twins technically selected him from the Athletics fourth overall in that draft but then immediately flipped him to the Giants for minor league catcher Miguel Caraballo.
The fact that the Giants actually gave up a player in order to jump the Rule 5 queue suggested they felt good about Susac’s chances of being an impact guy for them. He helped his own cause by putting up a .350/.386/.550 line in spring training. That was helped by an unsustainable .400 batting average on balls in play but it was enough to get him the job regardless.
As a Rule 5 guy, he can’t be optioned to the minors and will have to stay on the active roster all year long for the Giants to fully acquire his rights. If they want to cut him at any point this year, he could be traded or put on waivers. Any claiming team would take on the same Rule 5 restrictions. If he were to clear waivers, he would have to be offered back to the A’s.
Susac getting the job squeezes out Haase, who had signed a minor league deal in January. He had a huge spring, slashing .286/.375/.536, but also struck out in 14 of his 32 plate appearances. That’s fairly reflective of his big league career, as he has 48 home runs in 1,224 plate appearances but has been punched out at a 30.7% clip. He’ll head out to the open market to see what opportunities are available this week as all clubs shuffle their rosters.
Photo courtesy of Rick Scuteri, Imagn Images
Giants Likely To Designate Luis Matos For Assignment
The Giants are planning to designate outfielder Luis Matos for assignment, reports Susan Slusser of The San Francisco Chronicle. She adds that minor league signee Jared Oliva is expected to break camp in a bench role, so he’ll take Matos’ spot on the active and 40-man rosters.
Matos is out of minor league options. Formerly one of the organization’s top position player prospects, he was one of the most intriguing players fighting to hold his 40-man spot this spring. The Giants gave him a look long in camp, as he led the team with 23 games and 55 plate appearances.
After a quick start, Matos’ bat cooled in the middle of March. He finished the spring with a .260/.327/.440 line with two home runs. Matos only struck out three times but also took just one walk, as his on-base percentage was propped up by getting plunked by four pitches.
That aggressiveness has undercut Matos’ production in meaningful games. He’s a .231/.281/.369 hitter over parts of three MLB seasons. Matos has taken just under 600 plate appearances, the rough equivalent to one full season of playing time. He has hit 15 homers with strong contact rates but has worked walks at a modest 6.1% clip.
The Giants can wait until tomorrow morning to officially designate Matos for assignment. They’ll then have five days to try to trade him. If nothing comes together, they’d need to place him on waivers. There’s a decent chance he’ll be claimed, as he’s a 24-year-old former notable prospect who owns a .287/.345/.505 line over three Triple-A seasons. If another team acquires him via trade or waivers, they’d need to carry him on the big league roster.
Matos’ exclusion means the Giants will probably carry Jerar Encarnacion. He’s also an out-of-options outfielder who fits best in a corner or at designated hitter. He can get regular playing time at DH with Bryce Eldridge opening the season in the minors. San Francisco optioned depth outfielders Will Brennan and Drew Gilbert to Triple-A Sacramento this evening.
Rule 5 pick Daniel Susac is expected to win the backup catcher job. Casey Schmitt and Christian Koss seem ticketed for utility infield roles. That’ll very likely leave Oliva as a fifth outfielder and backup center fielder behind Harrison Bader. Assuming he’s officially selected onto the roster tomorrow, it’ll be his first MLB work in five years.
Oliva played in 26 big league games with the Pirates between 2020-21. He has bounced around the upper minors for the past few seasons without returning to the big league level. Oliva had a league average .252/.335/.413 batting line with 57 stolen bases in Triple-A with the Milwaukee organization last year. He signed a minor league deal with San Francisco over the winter and seized a job with his continued aggressiveness on the bases.
The righty-hitting outfielder stole 14 bags in 15 attempts. His .375 average over 20 games is unlikely to be a precursor to much of an impact at the plate, but the Giants are opting for more speed and defense in the final bench spot than Matos would have provided.
Poll: Who Will Win The NL West?
With Opening Day just around the corner, the offseason is more or less complete for MLB’s 30 clubs and teams. Until the playoffs begin, teams will be focused on a smaller goal: winning their division. In the run-up to the start of the season, we will be conducting a series of polls to gauge who MLBTR readers believe is the favorite in each division. The Blue Jays came out on top in the AL East, and the Tigers did the same in our poll on the AL Central. Yesterday, MLBTR readers overwhelmingly voted (66%) to predict the Mariners would win the AL West. Today, we’ll be moving on to the National League, starting with the NL West. All teams are listed in order of their 2025 regular season record:
Los Angeles Dodgers (93-69)
The Dodgers may have not even qualified for a playoff bye last year, but their dominant performance during the postseason quelled any doubt about the club being the class of the National League. Los Angeles did not rest on its laurels this offseason, adding two more superstars: outfielder Kyle Tucker and closer Edwin Diaz. That duo levels up a roster that already sports Shohei Ohtani, Freddie Freeman, Yoshinobu Yamamoto, and Mookie Betts among many other high-end players. As has become the norm, the Dodgers enter 2026 as the overwhelming favorite to win the division, although their aging and injury-prone core will surely start showing cracks at some point. Will this year be that year?
San Diego Padres (90-72)
On paper, the Padres might look to some as if they’re more likely to miss the playoffs entirely than overtake the Dodgers in the NL West. The silver living for San Diego, then, is that this was also true headed into the 2025 season. Despite that narrative, the Padres managed to spend much of the summer in a virtual tie with Los Angeles, and they were in sole possession of first place as late as August 23. This year, they’ll look to defy the odds once again with a patchwork rotation that offers little certainty outside of Nick Pivetta and a lineup that wasn’t substantially improved over the offseason. The biggest additions to San Diego relative to last year, in all likelihood, will be full seasons from star closer Mason Miller and veteran outfielder Ramon Laureano.
San Francisco Giants (81-81)
After a splashy trade for Rafael Devers last June, the Giants ended up selling at last year’s trade deadline. Their efforts to get back in the playoff hunt for 2026 this winter were more complementary than impactful. Tyler Mahle and Adrian Houser join a rotation that lost Justin Verlander. The lineup added a glove-first outfielder in Harrison Bader and a bat-first infielder in Luis Arraez. Still, the team looks solid on paper. Those additions leave the San Francisco offense without many obvious holes, and the rotation sports one of the game’s best starters in Logan Webb plus a former Cy Young winner in Robbie Ray. Perhaps the biggest question facing the Giants this year is in the bullpen. San Francisco traded Tyler Rogers and Camilo Doval last July and lost Randy Rodriguez to Tommy John surgery in September. None have been replaced. That could leave the club bleeding runs in the late innings without big steps forward from players like Erik Miller and Jose Butto.
Arizona Diamondbacks (80-82)
Just about everything that could go wrong on the pitching side did so for the Diamondbacks last year. Zac Gallen had the worst season of his career. Corbin Burnes, Justin Martinez, and A.J. Puk all underwent elbow surgery. Brandon Pfaadt and Eduardo Rodriguez had seasons to forget. Their team is weaker on paper headed into 2026 than it was in 2025, as their big offseason additions were reunions with Gallen and Merrill Kelly, plus additions at the infield corners (Carlos Santana and Nolan Arenado) won’t match the offensive output of those positions’ previous occupants (Josh Naylor and Eugenio Suarez). Even so, Ketel Marte and Corbin Carroll are legitimate superstars. Geraldo Perdomo might be one as well. If the team’s veteran pitchers can turn things around, perhaps the Diamondbacks could ride their strong offensive nucleus back into the postseason.
Colorado Rockies (43-119)
Following a 119-loss season in 2025, Colorado made some small moves under new front office boss Paul DePodesta but nothing that would truly move the needle. Jake McCarthy, Edouard Julien, Willi Castro, Michael Lorenzen, and Jose Quintana have certainly all had their fair share of success in the past, but each profiles as a complementary player at the best of times. Perhaps those moves working out plus steps forward from key pieces like Brenton Doyle and Ezequiel Tovar could help the Rockies avoid another 100-loss season, but a division title or Wild Card berth are both pipe dreams.
Who do MLBTR readers think will win the NL West? Have your say in the poll:
Who will win the NL West in 2026?
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Los Angeles Dodgers 66% (2,924)
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San Diego Padres 12% (523)
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Colorado Rockies 10% (449)
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San Francisco Giants 9% (403)
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Arizona Diamondbacks 3% (138)
Total votes: 4,437
Giants Release Joey Lucchesi
The Giants have released left-hander Joey Lucchesi, the New York Post’s Jon Heyman reports. Lucchesi was non-tendered by San Francisco last November and then re-signed to a minor league deal a couple of weeks ago, but the recent signing of southpaw Ryan Borucki apparently made Lucchesi again expendable. Heyman wrote that Lucchesi was “granted his release,” so it could be that the team agreed to Lucchesi’s request to be let go, or the left-hander might have triggered an out clause in his contract if he learned he wasn’t making the Opening Day roster.
Lucchesi first landed in San Francisco on a minors deal last offseason, and posted a 3.76 ERA, 7.3% walk rate, and 18.8% strikeout rate over 38 1/3 innings out of the Giants’ bullpen after his contract was selected in mid-June. The bottom-line ERA was respectable and Lucchesi had a strong 53% grounder rate, but the Giants still decided to pass on tendering a contract rather than pay Lucchesi a projected $2MM arbitration salary.
2025 marked the first time in Lucchesi’s seven MLB seasons that he worked exclusively out of the bullpen, and he went longer than an inning in only seven of his 38 Giants appearances. Rather than acting as a swingman or even a true long reliever, Lucchesi could be settling into more of a traditional relief role, though it certainly can’t hurt that he looks capable of slightly longer stints. Left-handed hitters have rarely been able to do much against Lucchesi, as he has held lefty swingers to a .219/.296/.301 slash line over his career.
Lucchesi is out of minor league options, which adds another hurdle in his quest to land with a new team. Unless he sticks in the majors and delivers particularly solid results, Lucchesi could find himself in DFA/waiver wire limbo, as the proverbial 26th man on the roster. That said, teams are always in need of left-handed depth, so Lucchesi may not have to wait long before he finds another contract.
Giants, Ryan Borucki Agree To Major-League Deal
The Giants and left-hander Ryan Borucki are in agreement on a one-year, major-league deal. Right-hander Hayden Birdsong has been placed on the 60-day injured list in a corresponding move. Borucki is a client of ISE Baseball.
Borucki, who turns 32 on March 31, joins a new organization just a day after being released by the White Sox. Since debuting with the Blue Jays in 2018, he owns a 4.28 ERA, a 19.7% strikeout rate, and an 8.9% walk rate in 256 1/3 innings. His strikeout and walk numbers are worse than average, though Borucki has shown flashes of success thanks to a strong 48.3% career groundball rate. His most recent above-average season came in 2023 with the Pirates. He posted a 2.45 ERA in 40 1/3 innings that year while walking just 2.6% of hitters and allowing less than one home run per nine innings for the first time since the pandemic season.
He has struggled mightily since then. In 46 innings from 2024-25, Borucki has a 5.28 ERA and a slightly more generous (but still not great) 4.32 FIP. His pinpoint control from 2023 now appears to be an outlier, as Borucki has walked 10.2% of hitters since the start of 2024. His hard-hit rate had reached a career-low 29.7% in 2023, though that returned to a more typical 38.5% in 2025. He missed most of 2024 with left triceps inflammation, then a month and a half of 2025 with lower back inflammation. Indeed, the 2023 season was his most recent injury-free year.
Recent track record aside, Borucki did very well in Spring Training with the White Sox. Leading up to his release yesterday, he had pitched six innings over an equal number of appearances without allowing an earned run. He also struck out eight hitters while allowing just a single walk and no home runs. As usual, spring stats should be taken with a grain of salt, though Borucki’s performance was enough to garner interest from several teams upon his release from Chicago. The Giants, who showed interest in Borucki earlier this offseason, now bring him in on what is undoubtedly a low-cost deal.
With this signing, San Francisco figures to carry three lefties in their season-opening bullpen. Erik Miller and Matt Gage come with less experience than Borucki, though they have intriguing profiles on their own. Miller’s four-seam velocity is in the 89th percentile, while his sinker, slider, and changeup all grade slightly above average by Statcast’s run value metric. He pitched 30 innings with a shiny 1.50 ERA in 2025, albeit with less encouraging peripherals and significant time missed due to a left elbow sprain. Gage does not throw as hard as Miller, but he did well last year with a 3.19 ERA in 31 innings between the Tigers and Giants. Although he doesn’t strike out many hitters, he makes up for it with a groundball rate in the upper 40s.
Assuming he sticks on the roster, Borucki will serve as a veteran complement to those two, as well as a potential trade piece should the Giants be out of contention by the deadline. Per RosterResource, the Giants’ 2026 payroll stands at $203MM, with a projected luxury tax number of $232.89MM. That puts them under the first tier of luxury tax threshold of $244MM, so Borucki won’t cost them anything beyond his modest salary.
Meanwhile, Birdsong’s IL placement was entirely expected after Thursday’s announcement that he is set to undergo Tommy John surgery. The procedure will keep him out for all of 2026 and a good part of 2027 as well. He will earn one year of service time while he is on the IL. Birdsong turns 25 in August and will have over two years of service time upon his return, leaving the Giants with four additional years of club control.
Jon Heyman of the New York Post was first to announce that the Giants and Borucki were close to a deal. Robert Murray of FanSided reported that the two sides were in agreement. Justice de los Santos of Mercury News added Birdsong’s IL placement as the corresponding move.
Photo courtesy of Mark Smith, Imagn Images
Giants Option Bryce Eldridge
The Giants optioned rookie first baseman Bryce Eldridge, the team informed reporters (including Susan Slusser of the San Francisco Chronicle). San Francisco also optioned second baseman Tyler Fitzgerald and outfielder Grant McCray.
Eldridge will open the season in the minors after finishing the ’25 season on the MLB roster. The 21-year-old top prospect made his big league debut in September. He played in 10 games and took 37 plate appearances, batting .107 without a home run. Eldridge took seven walks but struck out 13 times.
A 6’7″ power bat, Eldridge popped 25 homers in the upper minors last year. He combined for a .260/.333/.510 batting line across 433 trips. Eldridge spent the majority of the year as one of the youngest players in Triple-A. There’s immense physical upside, but he’s clearly far from a finished product. Eldridge struck out in more than 29% of his minor league plate appearances.
The whiffs have remained an issue this spring. Eldridge has fanned in 19 of his 50 exhibition plate appearances. He’s second (behind former Giants first-round pick James Tibbs III) in strikeouts among Spring Training hitters. It’s understandable the team feels he’d benefit from more reps against Triple-A pitching.
While Eldridge is surely disappointed not to have made his first Opening Day roster, it’s not exactly a career setback. Most hitters his age aren’t in consideration to break camp. He’ll very likely be back up at some point this season.
The demotion will probably have service time implications. He has 14 days of big league time, meaning he’d need to spend 158 days on the MLB roster to reach one year of service at season’s end. That won’t happen unless he’s called up before the end of April. It’s not a case of service time manipulation, to be clear. If the Giants were primarily concerned with that, they wouldn’t have promoted him last season (earlier than they needed to select him onto the 40-man roster).
The Giants are likely bypassing the chance at getting a Prospect Promotion Incentive draft pick, though it’d technically still be in play if they recall him within the first couple weeks. The PPI pick is conditional on awards voting, though, and Eldridge’s strikeout rates are concerning enough that he’d have an uphill path to winning Rookie of the Year. The primary focus is what the team thinks best for his development.
Rafael Devers will be the primary first baseman. The Giants don’t have a set designated hitter with Eldridge in the minors. There’s now more of a path to carrying both Luis Matos and Jerar Encarnación on the active roster. Both players are out of options and would otherwise need to be traded or exposed to waivers.
Casey Schmitt and a backup catcher (likely Rule 5 draftee Daniel Susac) are going to have bench spots. That’d leave one position player spot available between Will Brennan, Drew Gilbert, Christian Koss or a non-roster invitee. Corner bat Victor Bericoto and speedy outfielder Jared Oliva are among the minor league invites who have impressed this spring.
Hayden Birdsong To Undergo Tommy John Surgery
The Giants announced that right-hander Hayden Birdsong will undergo Tommy John surgery next week. He will miss the entire 2026 season and part of the 2027 campaign as well. Alex Pavlovic of NBC Sports Bay Area was among those to pass the info along.
The news is not surprising but is awful for Birdsong and the Giants regardless. It was reported a few days ago that Birdsong had an elbow issue and would be getting a second opinion. He was then diagnosed with a forearm strain and a sprain of his ulnar collateral ligament. He took a few days to consider his options but it seems he is destined for the surgeon’s table.
Prior to this injury, Birdsong was slated to be one of the club’s top depth starters. They project to start the season with a starting five of Logan Webb, Robbie Ray, Tyler Mahle, Adrian Houser and Landen Roupp. Due to injuries, teams usually need about a dozen starters to get through a full season. The Giants have Carson Seymour, Carson Whisenhunt and Blade Tidwell as optionable depth starters. Birdsong would have been in that group but has now been subtracted.
Birdsong should end up on the 60-day injured list whenever the Giants need a spot on the 40-man roster. The one silver lining of that outcome is that Birdsong will get a full year of service time and pay, more than if he spent the year as a healthy but frequently-optioned depth arm.
The typical recovery timeline for Tommy John surgery is usually 14 months or more. That means Birdsong won’t be available until about midway through the 2027 season, even in a best-case scenario. Ray and Mahle are both scheduled for free agency after 2026, so two rotation spots are potentially opening up. Those could be filled internally if guys like Seymour, Whisenhunt or Tidwell step up. The Giants could also make notable trades between now and then, in addition to potentially signing free agents next winter.
Time will tell what shape the rotation is in when Birdsong is again healthy but he should be a key part of the group regardless. He only has a 4.77 earned run average in his career so far but is only 24 years old and comes with some prospect pedigree. FanGraphs has been especially bullish, as they gave him the #42 overall spot at one point during the 2024 season. Birdsong posted a 2.51 ERA on the farm that year but then had a 6.23 ERA in Triple-A in 2025 and now he’s dealing with this lengthy rehab process.
Photo courtesy of Eakin Howard, Imagn Images
Giants Notes: Whisenhunt, Rodríguez, Birdsong, Harber
The Giants optioned left-hander Carson Whisenhunt and catcher Jesús Rodríguez to Triple-A Sacramento, per the club. Neither is particularly surprising, though both young players are ranked among the organization’s top 20 or so prospects.
Whisenhunt, 25, made his MLB debut last year and was tagged for a 5.01 ERA in 23 1/3 innings. He also logged a 4.43 ERA in 107 2/3 Triple-A frames. Formerly ranked among the sport’s top 100 prospects, Whisenhunt saw his strikeout rate plummet by nearly eight percentage points last season, checking in at 20.9%, though he did so with a career-best 7.7% walk rate that vastly outpaced 2024’s mark of 11.3%.
San Francisco signed Adrian Houser and Tyler Mahle this offseason, adding that pair of veterans to a group of incumbents led by Logan Webb, Robbie Ray and Landen Roupp. That quintet will open in rookie manager Tony Vitello’s rotation, with righty JT Brubaker providing a swing option in the ‘pen. Whisenhunt will be among the Giants’ first depth options in the event of an injury to a big league starter, with righties Blade Tidwell and Carson Seymour also in the mix.
As for Rodriguez, he was never going to supplant Patrick Bailey — the sport’s premier defensive catcher — as the starter. That he’s been optioned to Triple-A bodes well for backup Daniel Susac, who’s in camp as a Rule 5 pickup out of the A’s organization (though technically acquired via trade with the Twins). The 24-year-old Susac hit .303/.361/.455 in 36 plate appearances this spring and is poised to make his MLB debut as Bailey’s backup this year.
Rodríguez, 23, came to the Giants as part of the Camilo Doval trade with the Yankees last July. He had a huge spring (.353/.405/.559 in 37 plate appearances) but will head to Sacramento for additional development time. He’s coming off a strong .307/.393/.403 showing in 565 plate appearances spent mostly in Triple-A last year. Sending him to Sacramento will allow Rodríguez to get more regular at-bats than he’d have received as a backup to Bailey, and it also helps the team protect its depth by affording Susac a runway to a big league roster spot rather than placing him on waivers and having to offer him back to the A’s.
Turning back to the pitching side of things, righty Hayden Birdsong is still mulling his options after being diagnosed with a flexor strain and UCL sprain, per Susan Slusser of the San Francisco Chronicle. He’s already had a second opinion from Dr. Keith Meister. Birdsong will miss the entire 2026 season if he undergoes surgery, although getting surgery earlier now would allow him to return sooner next year.
A spring standout last year, the now-24-year-old Birdsong was terrific out of the San Francisco bullpen to begin the 2025 season. He broke camp with the club and rattled off 20 1/3 innings with a 1.33 ERA, a 25.9% strikeout rate and a 9.4% walk rate. A move to the rotation didn’t pan out. Birdsong started 10 games for the Giants but was rocked for a 6.17 ERA with greatly diminished rate stats (21.8 K%, 13.7 BB%).
Whether he goes the surgery route or rehab route, Birdsong will be facing a substantial absence. Surgery would sideline him into summer of the 2027 season. Rehab would still presumably cost him months of the current campaign. The vast majority of UCL sprains result in Tommy John or internal brace surgery, though there are exceptions. Braves righty Grant Holmes, for instance, suffered a UCL sprain last summer but went the rest/rehab route and is healthy now, set to break camp as Atlanta’s fourth starter. More often than not, even pitchers who attempt the rehab route ultimately undergo surgery, but it’s not a foregone conclusion.
In other Giants injury news, the team announced that infield prospect Parks Harber will be sidelined for the next four to six weeks due to a Grade 2 hamstring strain. Harber was never going to break camp with the big club — he’s not on the 40-man roster and hasn’t played above High-A — but he’s had a big spring. In 33 plate appearances, he’s slashed .357/.424/.571. The 24-year-old split the 2025 season between the High-A affiliates for the Giants and Yankees (who traded him to San Francisco in that Doval swap), hitting a combined .323/.420/.550 in 343 turns at the plate.
Baseball America ranked Harber 16th among Giants farmhands entering the season, noting that his impressive 2025 campaign put him on the prospect map after going undrafted out of UNC in 2024. He’s a bat-first prospect who’s played all four corner positions — primarily the two infield spots (with a slight edge toward third base over first base). BA’s report touts his offensive prowess while noting that he still needs to work on pulling velocity, as all of his pull-side homers came on breaking pitches and all of his homers off heaters went to center or the opposite field.
Harber will likely open the season in Double-A. His primary positions on the big league club are largely blocked, especially if Bryce Eldridge can prove he’s ready to stick in the majors, but Harber could be a nice righty-swinging corner bat off the bench or perhaps a trade chip when the deadline or next offseason rolls around.
Hayden Birdsong Diagnosed With UCL Sprain, Grade 2 Forearm Strain
Giants right-hander Hayden Birdsong recently underwent an MRI due to an issue in his elbow/forearm area, and the news isn’t encouraging. Alex Pavlovic of NBC Sports Bay Area was among those to relay this afternoon that Birdsong has been diagnosed with a Grade 2 forearm strain and a UCL sprain. He’s weighing treatment options and expected to seek a second opinion from Dr. Keith Meister in the coming days.
While the exact timeline for Birdsong’s return to action won’t be known until the right-hander makes a decision on his treatment plan, fans in San Francisco should expect him to be out for at the very least months after this diagnosis, if not much longer. As Pavlovic notes, Birdsong’s diagnosis is often one that ends in Tommy John surgery. That would wipe out the entire 2026 season and likely at least part of the 2027 campaign as well for the right-hander, although if he opts to rehab the injury he would likely have a chance to return to the mound at some point this year.
It’s a frustrating turn of events for Birdsong and the Giants, as the former top prospect is still just 24 years old and was one of the club’s top depth arms behind their starting five of Logan Webb, Robbie Ray, Adrian Houser, Tyler Mahle, and Landen Roupp. Birdsong struggled badly with his command this spring, a trend that began last season, but has never wanted for velocity. Even during camp, the right-hander was throwing his heater at 97mph. He sports a career 4.77 ERA with a similar 4.81 FIP in the majors, but has shown flashes of excellence at times. That includes a 2.37 ERA and 3.50 FIP in his first 14 appearances last year, split between 11 relief appearances and three starts totaling 38 innings of work altogether. Pavlovic notes that the Giants were very encouraged by Birdsong’s latest spring outing, which saw him allow zero walks and strike out one batter while allowing just one hit in a scoreless inning.
If Birdsong had managed to finish Spring Training strong, it wouldn’t have been hard to imagine him as the next man up for the Giants’ rotation in case of injury headed into the season. That’s obviously off the table now, of course, and San Francisco will instead have to turn to a handful of other young arms if and when injuries force them to dip into their depth options. Top prospect Carson Whisenhunt is perhaps the most exciting name of the group, though he didn’t exactly impress in his 20 1/3 inning cup of coffee in the majors last year. The same can be said of Blade Tidwell, who posted a 9.00 ERA in four starts for the Mets before being dealt to San Francisco in the Tyler Rogers trade at the trade deadline. Swing man Carson Seymour also made his big league debut last year to mixed results, and after that trio the Giants could look towards non-roster invitees in camp like right-hander Caleb Kilian.
Giants’ Hayden Birdsong Getting Second Opinion On Forearm Issue
TODAY: Birdsong’s agent Scott Boras told Susan Slusser that his client’s issue is related to his forearm. After an initial MRI, Birdsong is now getting a second opinion. Despite this somewhat ominous situation, Birdsong himself is hopeful that he’ll just miss a few weeks of action, which seems like it would be a best-case scenario even if it means a season-opening IL stint.
MARCH 12: Giants right-hander Hayden Birdsong is being evaluated for an elbow issue, reports Susan Slusser of The San Francisco Chronicle. President of baseball operations Buster Posey tells Slusser that the team is awaiting word from their medical staff.
At this point, it’s not clear if the team fears a potential long-term injury. Birdsong has had a brutal Spring Training, giving up eight runs over 2 1/3 innings. His velocity is intact, though, as he’s averaging 97.3 mph on his heater. He averaged 95-96 mph on his fastball while working multiple innings last year.
Birdsong was one of the organization’s better pitching prospects when he debuted in 2024. He has shown the ability to miss bats at the highest level, but subpar command has undercut his consistency. Birdsong excelled out of the bullpen early in the ’25 season.
The Giants moved him to the rotation towards the end of May. Birdsong’s first five starts were solid enough, if inefficient, but the wheels fell off in his latter five appearances. A July 21 outing in which Birdsong didn’t retire any of six batters faced was the final straw. The Giants optioned him to Triple-A. A 6.23 ERA across 10 Triple-A starts wasn’t enough to get back to the MLB level.
Birdsong entered the spring no higher than sixth on the rotation depth chart. He can continue to start in the minors or be an option for work in a wide open San Francisco bullpen. His Spring Training numbers hadn’t put him in a great position to break camp even before the potential for an injured list stint.