The Mariners’ Latest Pitching Success Story
For years, the Mariners' largely homegrown rotation has been one of the envies of teams around the league. Logan Gilbert, George Kirby and Bryan Woo have all made an All-Star team in the past couple years. All three have a career ERA of 3.61 or better with better-than-average strikeout and walk rates alike. Bryce Miller hasn't had as much success relative to his teammates, but he posted a 3.52 ERA with quality strikeout and walk rates in his first 56 MLB starts before an injury-ruined 2025 season (90 1/3 innings, 5.68 ERA, two IL stints for elbow inflammation).
Veteran righty Luis Castillo wasn't signed and developed by the Mariners, but Seattle pried him from Cincinnati in a 2022 trade for a package headlined by infield prospects Noelvi Marte and Edwin Arroyo. The M's quickly extended Castillo on a five-year, $108MM deal. In parts of five seasons with Seattle, his 3.61 ERA is right in line with the previously mentioned group (and a near-identical match to his 3.62 mark in six seasons with the Reds).
No organization in baseball has had more continuity in its major league rotation than the Mariners since this wave of pitchers arrived on the scene at T-Mobile Park. They've been consistent, productive and, with the exception of Miller's recent injury issues, largely durable. That's been key for the Mariners, because one less-talked-about aspect of their strong rotation is that the depth behind the group hasn't been great.
From 2022-25, the quintet of Gilbert, Kirby, Woo, Miller and Castillo started 75% of the Mariners' games. (Castillo wasn't even acquired until July 29 of the 2022 season.) The Mariners had rotation cameos from Robbie Ray (signed to a five-year deal, missed the second season due to Tommy John surgery, then traded to the Giants), Chris Flexen (26 starts on the back end of his low-cost contract) and Marco Gonzales (a holdover from the prior rotation group who was eventually traded while injured). But for the most part, it's been the same group of five, which has helped to mask the fact that the bulk of their top prospects in recent years have all been position players.
One hopeful addition to the group, for years, was right-hander Emerson Hancock. The No. 6 overall pick in 2020, Hancock was never touted as a future ace. He was an advanced college arm with above-average stuff and good command, one whom Baseball America tabbed as a potential No. 3 starter -- "and perhaps better if he refines his breaking pitches."
Instead, Hancock's development went the other direction. His command worsened. He lost some life on his fastball as he battled shoulder troubles and a lat strain. In general, he became more hittable. Hancock's strikeout rate plummeted when he reached Triple-A in 2024, though he still posted a mid-3.00s ERA. He was north of 5.00 in 2025.
Between some infrequent and inconsistent big league stints from 2023-25, Hancock totaled 162 2/3 innings with a 4.81 ERA, one of the lowest strikeout rates in baseball (15.6%) among pitchers with that many innings and a good-not-great walk rate (7.8%). He looked like a fifth or sixth starter -- the type of arm who oscillates in and out of a rotation before possibly settling into a bullpen role or beginning to bounce around the league as a swingman.
There weren't many tangible signs of a breakout last year. Hancock's average fastball climbed to a career-high 94.9 mph, although that was at least moderately skewed by a move to the 'pen later in the season. He sat 94.6 mph as a starter in 2025 -- still up from his previous career-best 93.4 mph -- and 97.2 mph as a reliever. But even with the velo increase, Hancock's swinging-strike rate fell. His opponents' contact rate climbed. His 8.1% walk rate was a career-worst mark. Hancock had the look of a depth starter and was entering his final option year in 2026. The long-term outlook wasn't great.
And then spring training rolled around.
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Bryce Miller To Make Rehab Start
Mariners right-hander Bryce Miller will head out on a rehab assignment this weekend. The 27-year-old is working his way back from an oblique injury. He’ll start for Triple-A Tacoma on Saturday, general manager Justin Hollander told reporters, including Daniel Kramer of MLB.com.
Miller fell behind the other starters during the spring after experiencing tightness in his side. The issue ultimately landed him on the injured list to open the season. The righty is coming off an injury-plagued 2025 campaign. He went down with elbow inflammation midway through May. Miller initially returned from the injury at the end of May. He was hammered for eight earned runs over nine innings and went back on the IL with the same injury.
The elbow injury didn’t stop Miller from contributing in the postseason. Despite an ineffective eight starts to close the regular season, he delivered three strong outings in the playoffs. Miller held the Tigers to two earned runs in his lone ALDS appearance, then notched a pair of one-run outings against the Blue Jays in the ALCS. He earned the win in Game 1 of the series with a quality start against Toronto.
Miller is expected to need the full 30 days allotted for the rehab assignment, per Ryan Divish of the Seattle Times. The plan is for him to throw two innings or 30 pitches with the Rainiers tomorrow. Now that Miller has a definitive timeline, questions will arise about who he’ll replace in the starting rotation. Right-hander Emerson Hancock slotted into Miller’s spot to open the season. He’s been phenomenal, posting a 2.28 ERA with a 25:4 strikeout-to-walk ratio.
“If we get a month from now, and that’s what happens, we’ll figure it out,” Hollander said when asked about potentially having six pitchers for five rotation spots. “We haven’t made any decisions on that whatsoever.”
Hancock has had shots in the past, as the Mariners have dealt with injuries to Miller, George Kirby, and Logan Gilbert. It’s never gone nearly this well. The 26-year-old had an ERA in the mid to high-4.00s in each of his first three big-league seasons. His “best” strikeout rate heading into this year was his 16.6% mark in 2025. That number sits at 29.4% through four starts this season. Hancock has made significant arsenal changes, prioritizing his four-seamer over his sinker and throwing his sweeper 27.4% of the time, up from 3.2% in 2025. His Stuff+ is up to 107. He’d topped out at a 91 Stuff+ in his three previous seasons.
Photo courtesy of Rick Scuteri, Imagn Images
Bryce Miller May Start Season On Injured List
Mariners right-hander Bryce Miller may not be available for the start of the season. Per Ryan Divish of The Seattle Times, Miller felt some soreness in his left side today and didn’t finish his bullpen session. “He’s definitely behind,” Mariners general manager Justin Hollander said. “It’s the type of injury where it seems wise not to push him too fast. Obviously, we won’t make any decisions until we need to.”
Miller was slowed by some left side soreness about two weeks ago. An MRI revealed some inflammation and he was given a platelet-rich plasma injection. His planned bullpen session today was part of a ramp-up that could have seen him stretched out for the start of the season. This setback appears to put that in jeopardy. He is not being fully shut down, as he will still be playing catch and doing some other activities, but the Mariners will want the soreness to clear before he fully lets it fly from a mound again.
It doesn’t seem like this is a major issue but it could be an early test of Seattle’s rotation depth. The Mariners have a strong starting group when everyone is healthy, as they have Logan Gilbert, George Kirby, Bryan Woo, Luis Castillo and Miller. Once they have to dip into their depth, things get a bit more questionable. Divish mentions Cooper Criswell and Emerson Hancock as the two guys most likely to step up if Miller does miss some time.
Criswell’s best season to date was his 2024 showing with the Red Sox. He tossed 99 1/3 innings in a swing role, allowing 4.08 earned runs per nine. His 17.2% strikeout rate was subpar but he only walked 7.3% of opponents and induced grounders on 50.3% of balls in play. In 2025, the Sox added some arms and Criswell was mostly blocked, only making seven big league appearances. He had a decent showing in Triple-A, throwing 65 2/3 innings with a 3.70 ERA, 24.5% strikeout rate, 10.1% walk rate and 49.4% ground ball rate.
Despite the passable numbers, Criswell exhausted his final option in 2025, pushing him to fringe roster status. The Sox signed him to a 2026 deal with an $800K salary, a bit above the $780K league minimum, even though he hadn’t yet qualified for arbitration. The plan seemed to be to pass him through waivers, allowing him to serve as Triple-A depth even though he’s out of options. That plan didn’t work, as the Mets claimed him off waivers in December. When the Mets nudged him off their roster, Seattle sent some cash to Queens to get him from DFA limbo.
Criswell’s number are fine but there’s a bit of risk there. His velocity doesn’t reach 90 miles per hour, making him a soft-tosser in this era. He has been able to get guys out regardless, but it’s a fine line to walk.
Hancock is a former sixth overall pick but his big league performance hasn’t lived up to that status yet. Over the past three years, he has given the M’s 162 2/3 innings with a 4.81 ERA, 15.6% strikeout rate, 7.6% walk rate and 40.1% ground ball rate.
One thing that may perhaps work in Criswell’s favor is that Hancock still has an option, so he could be sent to Triple-A to stay stretched out there. Since Criswell is out of options, he needs to either be in the rotation or the bullpen. If Criswell does end up with the rotation spot, that would help alleviate the pressure in the bullpen. Seattle’s eight projected relief arms are all out of options except for Matt Brash and Jose A. Ferrer, who are too good to be sent down.
If Hancock and Criswell are both up in the big leagues, Blas Castano would be the only optionable depth starter in the Triple-A rotation. He has just one major league appearance on his track record and posted a 5.19 ERA in Triple-A last year. The Mariners have Dane Dunning, Jhonathan Díaz, Randy Dobnak and Casey Lawrence in camp as non-roster invitees with some big league experience.
Photo courtesy of Rick Scuteri, Imagn Images
Mariners Notes: Ford, Right Field, Hancock
With Mitch Garver headed into the open market, the Mariners have a hole to fill on their roster without a clear backup for Cal Raleigh behind the plate. As noted by Ryan Divish of The Seattle Times, GM Justin Hollander indicated at the GM Meetings this past week that, as the roster is currently constructed, that backup catching job would go to longtime top prospect Harry Ford.
“As of today, Harry would definitely be the backup,” Hollander said, as relayed by Divish. “I think that Harry’s in a great spot. He has checked all the boxes along the way that you would want from a high school catcher coming through the draft. He’s performed at every level.”
It’s not hard to see why Hollander feels positively about Ford, who has been a consensus top-100 prospect for years and got a brief taste of the majors late in the season with eight games down the stretch this year. Ford hit .283/.408/.460 in 97 games at the Triple-A level this year, an impressive slash line that was good for a 125 wRC+ even in the Pacific Coast League’s inflated offensive environment. He struck out just 19.2% of the time while sporting a massive 16.2% walk rate, and while he didn’t run as often as he had in the lower minors (just seven steals on the year) he did slug a career-high 16 home runs. Overall, it was a strong showing for the 22-year-old and clearly sets him up to be ready for more exposure to major league pitching in 2026.
Whether that comes in Seattle or elsewhere has not entirely been decided yet, however. Divish notes that while the Mariners do seem comfortable having Ford join the roster as the backup to Raleigh, they remain open to trade offers that involve Ford. That’s a sensible position to take, given that Raleigh has cemented himself as baseball’s best catcher after posting perhaps the best season at the position in MLB history this past year. With the Mariners surely intent on continuing to play Raleigh (who has started at least 114 games behind the dish in each of the past three seasons) as much as possible, the role of backup catcher isn’t quite as important for Seattle as it is for other teams.
While there are no obvious alternatives in the organization to Ford at the moment, Divish points out that a number of viable backup options figure to be available on minor league or low-cost big league deals. Many of those options could surely offer similar production to Garver in the spot. Given the scarcity of quality catching options around the league, if another team views Ford as a plug-and-play starter behind the dish they might value him enough to make the return for his services worth the downgrade from Seattle’s perspective. A weak catching market in free agency that is highlighted by J.T. Realmuto and Victor Caratini should only further bolster Ford’s value if the Mariners were to decide to shop him this offseason.
Turning away from Ford, Hollander also expressed confidence in the group of players they already have in the organization when it comes to filling out the outfield next season. Randy Arozarena is locked in as the club’s everyday left fielder (barring a move that sees him traded, at least), while Julio Rodriguez has cemented himself as a franchise cornerstone in center. Right field was handled by a hodgepodge of different players throughout 2025, and in 2026 Hollander points to three names who could factor into the mix: Luke Raley, Dominic Canzone, and Victor Robles.
Even though none of them were impact players in 2025, it’s not hard to see why the Mariners would want to give that trio a run at the position rather than pursuing an external addition. Raley is just one year removed from back-to-back seasons where he slashed .246/.326/.476 while totaling 41 homers and 42 doubles across 255 games. While Raley has never been successful against left-handed pitching, it’s not at all difficult to imagine that he could rebound enough to be worth affording regular playing time to when a right-handed starter is on the mound for the opposing team. Robles, meanwhile, missed all but 32 games this past year due to injury and was someone the Mariners believed in enough that they afforded him an extension just two months into his tenure with the organization.
Canzone has the weakest overall track record of the three, but actually delivered by far the best results this year. In 82 games as a part-time player for the Mariners, Canzone raked to the tune of a .300/.358/.481 slash line with 11 homer and 11 doubles while he struck out at a reasonable 21.9% clip. A tough postseason where he went just 3-for-28 with a walk and ten strikeouts saw him leave 2025 on a sour note, but the 28-year-old clearly had a 2025 worth building on next season. Perhaps adding a second right-handed hitter to the mix alongside Robles could allow the Mariners to maximize matchups and create depth in the event of injury, but an everyday starter in the outfield does seem unnecessary given the far more significant holes around in the infield.
Another place where it seems the Mariners could look to go internal is with starting pitching depth. Divish reports that right-hander Emerson Hancock is expected to prepare this winter and enter Spring Training as a starting pitcher. Hancock has served as a swingman with below average results (4.81 ERA, 5.23 FIP) across his three seasons and 162 2/3 innings of work in the majors, but looked quite good in short relief down the stretch for Seattle this year. That made some wonder if he would stick in the bullpen full-time going forward, but it seems as though the Mariners value Hancock’s versatility given their lack of upper-level starting pitching depth. Beyond their starting five pitchers, only Logan Evans has spent significant time starting at the big league level aside from Hancock.
Mariners Select Joe Jacques, Option Emerson Hancock
12:45pm: The M’s have now announced that they have selected Jacques, with righty Emerson Hancock optioned as the corresponding move. It’s unclear how the club plans to fill that rotation spot. They could recall someone like Logan Evans or perhaps try to get to the All-Star break with a four-man rotation.
12:10pm: The Mariners are calling up left-hander Joe Jacques, reports Ari Alexander of KPRC 2. The southpaw is not currently on Seattle’s 40-man roster but they already have a vacancy there. They will need to make a corresponding move to open an active roster spot.
Jacques, 30, started the season with the Dodgers on a minor league deal. A couple of months into the season, the M’s designated Will Klein for assignment and then flipped him to the Dodgers, with Jacques coming to Seattle as the return in that swap.
Between those two clubs, the lefty has thrown 32 Triple-A innings this year with a 6.19 earned run average. That’s obviously not an inspiring number, but he has other numbers which can provide more optimism. His 23.2% strikeout rate and 7.9% walk rate this year are both solid figures, while his 58.3% ground ball rate is quite strong. His ERA has been inflated by a .396 batting average on balls in play and a 59.5% strand rate in the hitter-friendly Pacific Coast League. His 4.57 FIP suggests he has deserved far better.
The underlying stats match his previous minor league work. From 2021 to 2024, he tossed 173 innings on the farm with a 3.90 ERA, 22% strikeout rate, 9.1% walk rate and grounders on more than half of the balls in play he allowed. He also has a bit of big league work on his résumé. He tossed 29 2/3 innings over the 2023 and 2024 seasons with a 5.46 ERA, 15.9% strikeout rate, 8% walk rate and 61.9% ground ball rate.
The Seattle pitching staff has been light on left-handers for most of this year, with Gabe Speier being the only southpaw to have thrown more than four innings. Jacques will seemingly get a shot at securing a job as the second lefty. He still has a minor league option remaining, so it’s possible he’ll be shuttled to Triple-A and back, as needed. It’s also possible the M’s look some lefty relievers ahead of the deadline, which could push Jacques down the depth chart.
Photo courtesy of Denis Poroy, Imagn Images
Mariners Select Jhonathan Díaz
The Mariners announced that they have selected the contract of left-hander Jhonathan Díaz. The club already had an open 40-man roster spot, so no corresponding move was necessary there. In terms of the active roster, right-hander Emerson Hancock has been optioned to Triple-A Tacoma. Daniel Kramer of MLB.com noted earlier that Díaz was in the clubhouse with Hancock headed out.
As of a month ago, the Mariners were set to open the season with a strong front five of Logan Gilbert, Bryce Miller, George Kirby, Bryan Woo and Luis Castillo. Unfortunately, Kirby was shut down in early March due to some shoulder inflammation and started the season on the injured list.
That opened an opportunity for Hancock but his start in yesterday’s game against the Tigers could hardly have gone much worse. He didn’t make it out of the first inning, recording just two outs, one of which was a caught stealing. He allowed six earned runs on seven hits, forcing the bullpen to cover 8 1/3 innings.
Of the club’s eight relievers, four of them pitched last night, each of them recording at least four outs and throwing at least 31 pitches. Out of the four guys who didn’t pitch last night, three of them appeared in Sunday’s contest.
They have brought up Díaz presumably for a multi-inning option out of the bullpen soon. Last year, he made five appearances in the majors for Seattle but spent most of his time in the Triple-A rotation. He logged 117 2/3 innings for Tacoma over 22 starts and one relief appearance. His 4.36 earned run average wasn’t bad in the context of the hitter-friendly Pacific Coast League. He struck out 22.9% of batters faced, gave out walks at a 9.9% clip and got grounders on 54.1% of balls in play.
The lefty was outrighted off the roster in February and elected free agency but returned via a minor league deal. He still has options, so the M’s could perhaps shuttle him to Tacoma and back throughout the year, recalling him whenever a situation like this arises.
In the short term, it’s unclear what the M’s plan to do with the rotation. They are in the midst of a seven-game stretch to start the season, with two more to go. But thanks to having five off-days in April and some at the start of May, they don’t play more than six games in a row again until the second half of May. Perhaps they could survive for a while with a four-man group of Gilbert, Miller, Woo and Castillo. Optionable arms like Hancock, Díaz and Blas Castano could perhaps make spot starts or take bulk work in occasional bullpen games over the next six weeks or so.
Photo courtesy of Steven Bisig, USA TODAY Sports
Mariners Recall Emerson Hancock, DFA Seby Zavala
The Mariners have promoted right-handed pitcher Emerson Hancock from Triple-A, the team announced this afternoon. To make room on the active roster, Seattle designated catcher Seby Zavala for assignment.
Hancock will take the ball this evening against the Rangers, filling in for an injured Luis Castillo. Castillo landed on the 15-day IL with a Grade 2 left hamstring strain following his start last Sunday. After officially placing Castillo on the IL on Tuesday, the Mariners did not need to add another starting pitcher to the active roster until today, so they selected Zavala’s contract instead. He did not appear in a game. Presuming Zavala passes through waivers, he will most likely accept an outright assignment to Triple-A Tacoma, considering the Mariners have already outrighted him twice this season. Indeed, this is the second time Seattle has DFA’d Zavala to make room for Hancock on the major league roster.
The 25-year-old Hancock is back for his fourth stint with the big league club this season. Over nine starts, he has pitched to a disappointing 4.76 ERA and 5.14 SIERA in 45 1/3 innings pitched. Unfortunately, the young right-hander hasn’t looked much better at Triple-A. He has a 4.66 ERA and 5.78 FIP in 10 starts (56 IP) since his most recent demotion. As was his biggest problem last year, he has had tremendous difficulty earning strikeouts against Triple-A and MLB competition, and he isn’t limiting walks or hard contact as much as needs to if he’s going to survive with such a low strikeout rate.
Hancock still has all the potential that made him one of the Mariners’ top pitching prospects from the moment he was selected with the sixth overall pick in 2020 to his graduation from prospect status this season. However, he has yet to turn that potential into results. Presumably, he’ll get a couple more chances to prove himself in the majors this season while Castillo is on the IL.
Zavala, 31, came to the Mariners last November as part of the trade that sent Eugenio Suárez to the Diamondbacks. He is a strong defensive catcher thanks to above-average framing and blocking skills, but his career .205/.271/.342 slash line is precisely why he has been unable to hold down a job in the majors this season. It hasn’t helped that he is 19-for-101 (.188) with a 79 wRC+ at Triple-A this year. Presumably, he will finish the season at Triple-A Tacoma, sticking around as additional catching depth in case one of Cal Raleigh or Mitch Garver suffers a late-season injury.
Mariners Designate Seby Zavala For Assignment
The Mariners announced that catcher Seby Zavala has been designated for assignment. In the corresponding move, right-hander Emerson Hancock has been called back up from Triple-A to start today’s game against the Blue Jays. Zavala’s DFA also creates an opening on Seattle’s 40-man roster.
This is the second time in the last three weeks that Zavala has been designated, and his previous trip to DFA limbo saw him clear waivers and then outrighted to Triple-A Tacoma. Because Zavala had previously been outrighted in his career, he could’ve rejected that assignment and instead become a free agent, but he opted to remain with the M’s and report to Triple-A. Zavala is out of minor league options, so Seattle has been forced to designate the catcher and thus expose him to the waiver wire in order to move him to Triple-A.
Zavala could very well pursue the same path this time around, given that the Mariners selected his contract back onto the 26-man roster in pretty short order after his previous outright. That move (just earlier this week) came after Mitch Garver was dealing with a sore wrist, and thus the Mariners wanted some extra catching depth if Garver was strictly limited to DH duties or perhaps needed to visit the injured list. Since Garver appears to be okay, the M’s apparently now feel comfortable enough with the situation to again remove Zavala from their 40-man.
With Cal Raleigh handling the starting catcher duties and Garver also getting some part-time work behind the plate, Zavala has gotten into just 18 games this season, and is hitting .154/.214/.282 over 43 plate appearances. Even considering that Zavala is known as a defensive specialist, the Mariners have decided to go with the bat-first approach with their catching corps, which isn’t surprising given how Seattle has been hurting for offense all season.
As for Hancock, he is set to make his ninth start of the season after delivering a 4.79 ERA in his first 41 1/3 innings of the season. The former top prospect has gotten another look with Bryan Woo on the 15-day IL, but since Woo is expected back relatively soon, Saturday’s outing will likely be just a spot start for Hancock. It could also potentially be an unofficial audition for potential trade suitors, if the Mariners look to deal from their rotation depth to upgrade their lineup at the deadline.
Mariners Select Kirby Snead
The Mariners announced a series of roster moves today, selecting the contract of left-hander Kirby Snead and reinstated right-hander Eduard Bazardo from the injured list. In corresponding moves, left-hander Tayler Saucedo was placed on the 15-day IL due to right knee hyperextension and right-hander Emerson Hancock was optioned to Triple-A Tacoma. To open a 40-man spot for Snead, righty Matt Brash was transferred to the 60-day IL.
Snead, 29, signed a minor league deal with the Mariners in the winter. He reported to Triple-A and has made 12 appearances at that level so far this year with a 2.92 earned run average. That’s supported by a 27.7% strikeout rate, 4.3% walk rate and a huge 63.3% ground ball rate.
The southpaw has had some encouraging results in the minors before, but has struggled in the majors. He currently has a career ERA of 5.20 in the big leagues, tossing 64 innings over the previous three seasons between the Blue Jays and Athletics. He was outrighted by Oakland in October, which led to his deal with the Mariners.
With Saucedo going on the IL, Snead will step in as the club’s second lefty reliever alongside Gabe Speier. Snead is out of options and can’t be easily sent back down to the minors down the line. However, he has less than two years of service time and could therefore be cheaply retained into the future if he holds onto his roster spot all year.
Hancock, 25 this month, came into the year as the club’s sixth starter behind Luis Castillo, George Kirby, Logan Gilbert, Bryce Miller and Bryan Woo. But Woo began the year on the injured list due to right medial elbow inflammation, which opened a rotation spot for Hancock.
Through seven starts, Hancock has a 5.24 ERA with a tepid 15.4% strikeout rate. Woo has been on a rehab assignment of late, having already made three starts with the most recent one being a five-inning outing on Saturday. Hancock’s option appears to pave the way for Woo to be reinstated at some point in the near future.
As for Brash, he’s been on the 15-day IL all year due to right elbow inflammation. This transfer is backdated to his initial IL placement, meaning he can’t be reinstated until late May. That doesn’t seem to be a possibility anyway, as he was shut down at the end of April and there haven’t been any substantive updates on his condition since then.
Mariners Notes: Urias, Woo, Miller
Mariners infielder Luis Urias exited last night’s game after taking a 94 mph fastball of his left wrist, but the Mariners announced that he’s been diagnosed with a contusion. X-rays on the wrist were negative, per MLB.com, and he’ll be considered day-to-day for the time being.
The 26-year-old Urias has gotten out to a .160/.300/.400 start this season, striking out 11 times in 30 plate appearances (36.7%) — an uncharacteristically high rate for a player who entered the season with a career 21.6% strikeout rate.
The Mariners entered the season envisioning a platoon of the righty-swinging Urias and lefty-hitting Josh Rojas — a more contact-oriented pairing than the more boom-or-bust nature of since-traded third baseman Eugenio Suarez. Rojas has been one of the team’s bright spots, hitting .311/.392/.422 (148 wRC+) in 51 trips to the plate thus far. Only four of those plate appearances have come against lefties, but if Urias is sidelined for a bit, Rojas could get some more reps against southpaws. Seattle doesn’t have many lefty opponents on the immediate horizon, though they’re slated to face Andrew Heaney on Thursday.
Elsewhere on the injury front, the M’s are getting closer to welcoming righty Bryan Woo back to the staff. The right-hander made his first minor league rehab appearance with Triple-A Tacoma last night, and as broadcaster Mike Curto points out, pitched three perfect innings while fanning five of his nine opponents.
Woo’s fastball ranged from 91-95 mph, per Curto, which is down from last year when he averaged 95.2 mph on his heater. That said, it’s also the first rehab start for a right-hander who’s yet to pitch this season while waiting for some elbow inflammation to calm down, so that’s not necessarily a massive red flag just yet. It’d be natural if he built closer to that velocity as he continued to ramp up over what could be multiple rehab starts between now and his activation.
In place of Woo in the rotation, Seattle has been relying on former top-10 pick Emerson Hancock, who’s posted a 6.10 ERA through four starts, although the vast majority of the damage came in one tough outing against the Brewers. Hancock has yielded a combined seven earned runs through 17 1/3 innings in his other three appearances but was lit up for an eight spot in just 3 1/3 innings that day. He’s sporting a well below-average 16.7% strikeout rate but also an exceptional 3.3% walk rate. Hancock is the least established arm in Seattle’s rotation, trailing Luis Castillo, George Kirby, Logan Gilbert and Bryce Miller — so he’s likely to be the odd man out if everyone’s healthy when Woo returns.
Miller, in particular, has impressed the Mariners this year. He’s pitched to an electric 1.85 ERA with a 26.1% strikeout rate and 7.6% walk rate in 24 2/3 innings. Miller recently chatted with Adam Jude of the Seattle Times about his incorporation of a new splitter into his repertoire — a pitch that’s been flat-out dominant for the 25-year-old righty so far. Miller has thrown his new pitch at a 19.4% clip this season, finishing off 24 plate appearances with the pitch. Those 24 plate appearances have resulted in 21 outs — eight of them strikeouts — and yielded only three singles. Both Gilbert and Kirby began throwing splitters last season, and Miller has leaned on his teammates for advice and guidance when looking to master his new pitch.
“It kind of has a mind of its own sometimes, but I’ve been able to command it really well,” Miller tells Jude of his new weapon. “So, I’m really happy with it and I think it’s opened up a lot of things for me [against] lefties and righties.”