Latest On Athletics’ Rotation
The A’s optioned righty Joey Estes to Triple-A yesterday, thinning the field of pitchers vying for spots on the big league staff. Estes seemed like a long shot to make the club after being summoned to the majors for only 11 innings last year and otherwise pitching to a 5.51 ERA in 15 Triple-A starts (and two relief appearances). He tossed only 2 2/3 innings in formal Cactus League play.
Estes, 24, came to the A’s alongside Shea Langeliers, Cristian Pache and Ryan Cusick in the trade sending Matt Olson to Atlanta. Estes has now pitched in parts of three major league seasons but been tagged for a 5.51 ERA (matching last year’s Triple-A mark) with just a 16.3% strikeout rate in 148 1/3 big league innings. He has good command (career 5.4% walk rate), but he’s an extreme fly-ball pitcher who doesn’t throw hard or miss bats. As such, he’s been far too susceptible to home runs. Estes has been used primarily as a starter to this point in his career, but he’s entering his final minor league option year, so perhaps the A’s will want to see what he’d look like in a bullpen role.
Entering camp, there were two spots up for grabs in manager Mark Kotsay’s rotation. Kotsay acknowledged back when pitchers and catchers reported that Luis Severino, Jeffrey Springs and free agent signee Aaron Civale had spots locked down, while the other spots would be sorted out in camp. Hard-throwing righty Luis Morales hasn’t exactly dominated this spring (eight runs in 16 hits and seven walks with 10 strikeouts in 12 innings), but Martin Gallegos of MLB.com writes that Morales is more or less a lock to open the season in the rotation.
Morales’ middling spring showing hasn’t emphatically earned that spot, but he’s coming off a rookie showing in which he tossed 48 2/3 innings with a 3.14 ERA. He averaged 97.3 mph with his four-seamer, struck out a respectable (albeit slightly below average) 21.6% of his opponents and issued walks at a 9% clip. Prior to that solid debut, he’d pitched in 23 games (14 starts) between Double-A and Triple-A and notched a combined 3.73 ERA, 29.2% strikeout rate and 9.6% walk rate.
Morales still has a full slate of three minor league option years remaining, so if he struggles badly in the final weeks of camp or is hit hard early in the season, he can be sent down without first needing to pass through waivers. The A’s can control him for at least six full seasons.
Gallegos writes that lefty Jacob Lopez might be the favorite for the fifth and final starting gig on Kotsay’s staff. The 28-year-old southpaw was acquired in the same trade that brought Springs to the A’s. He pitched 92 2/3 innings of 4.08 ERA ball with a strong 28.3% strikeout rate and a 9.3% walk rate last year. Seventeen of his 21 appearances were starts.
Lopez was slowed by a forearm issue early in camp but made his spring debut a few days ago. It didn’t go especially well (three runs in two innings), but he’ll have two more weeks to show that he can be trusted with a rotation spot to begin the season. Lopez still has one minor league option year remaining, though the A’s presumably prefer not to burn that unless his performance makes it absolutely necessary.
One name not to sleep on entirely: top prospect Gage Jump. The 22-year-old lefty hasn’t yet pitched in Triple-A, but Baseball America’s Ian Cundall writes that Jump has already seen his average fastball climb 1.6 mph this spring. He’s sitting 96 mph and topping out around 98.5 mph — up from last year’s average of 94.4 mph and max of 97 mph.
Jump, 23 next month, was the No. 73 pick in the 2024 draft. He dominated in High-A and Double-A last season, combining for 112 2/3 frames with a 3.28 ERA, 28.4% strikeout rate, 7.4% walk rate, 41.8% ground-ball rate and just 0.56 homers per nine frames. He’s widely regarded as one of the game’s 100 best overall prospects and is more specifically one of the very best left-handed pitching prospects in the sport.
Though Jump isn’t yet on the 40-man roster, he doesn’t necessarily face fierce competition. His ceiling is as high or higher than anyone else in the Athletics’ rotation at the moment, and the final two spots haven’t been claimed in convincing fashion. Jump has pitched 6 2/3 spring innings and allowed a pair of runs on five hits and three walks with four punchouts. The A’s technically don’t have to add him to the 40-man roster until the 2027-28 offseason (when he’d need to be selected to be protected from the Rule 5 Draft), but a 2026 debut seems likely, so long as Jump can remain healthy and pick up where he left off last season. It’d be a modest surprise if he broke camp with the club, but doing so would position the A’s to potentially pick up a future draft pick through MLB’s prospect promotion incentive program.
A’s Have Two Rotation Spots Up For Grabs In Camp
The A’s added back-end starter Aaron Civale on a $6MM free agent contract this week. He slots behind Luis Severino and Jeffrey Springs as experienced arms in an otherwise young rotation. Manager Mark Kotsay suggested on Wednesday that while the three veterans were locked into starting spots, camp battles could decide the final two roles. “It’s definitely an open competition,” the fourth-year skipper told Martín Gallegos of MLB.com. “I think we do have some depth this year that we haven’t had in the past.”
Of the A’s returning starters, only Springs and Severino got to 100 MLB innings last season. Jacob Lopez led the way with 92 2/3 frames across 21 appearances (17 starts). He was followed in MLB workload by J.T. Ginn, Luis Morales, Gunnar Hoglund, Mason Barnett and Jack Perkins. Morales and Lopez had the most success and enter camp as the presumptive favorites.
The 23-year-old Morales turned in a 3.14 earned run average over his first 48 2/3 MLB frames. His 21.6% strikeout percentage and 9% walk rate weren’t as impressive, and his fly-ball profile led to some home run trouble. The underlying numbers would suggest he’s a regression candidate, but he could certainly offset that by missing more bats in his first full season. Morales has a 97 mph average fastball and a potential plus breaking ball.
Lopez is a soft-tossing lefty who turns 28 during Spring Training. That points to a lower ceiling than Morales possesses, but he arguably showed more in his rookie season. Lopez punched out 28.3% of opponents behind an above-average 11.8% swinging strike rate. He finished the year with a 4.08 ERA that is skewed by a nine-run drubbing that he took in Seattle just before he went on the injured list with a season-ending flexor strain. He carried a 3.28 earned run average into that appearance.
It was a relatively small sample and it’s easy to see potential downside. Lopez is an extreme fly-ball pitcher who’ll spend the next two seasons in the most hitter-friendly home park outside Colorado. A 90-91 mph average fastball doesn’t give him much margin for error. Home runs are likely to be an issue, but Lopez has always missed more bats than his velocity might suggest thanks to a quality slider and plus command. Gallegos writes that Lopez is slightly behind schedule because of the late-season forearm issue but should have time to log a full Spring Training workload.
Ginn probably has the best chance to push one of Morales or Lopez for a season-opening rotation spot. He fanned a quarter of opponents against an 8% walk rate while getting ground-balls more than half the time. A lot of the fly balls that he did give up cleared the fences. Sutter Health Park did Ginn no favors, as 12 of his 17 home runs allowed came at home. He had a near-7.00 ERA in Sacramento compared to a 3.14 ERA on the road. The cumulative result was a 5.08 mark across 90 1/3 innings.
Barnett was called up late in the season. He was hit hard over five starts, posting a near-7.00 ERA through 22 1/3 innings. He has shown intriguing stuff, headlined by a mid-90s fastball and quality slider, but the command has been inconsistent throughout his minor league career. Hoglund is a former first-round pick whose prospect stock had tumbled after Tommy John surgery. He seemed to put himself back on the map with a strong six-start run in Triple-A, but major league opponents teed off over his first six career outings. He underwent season-ending hip surgery in June.
Perkins started four of 12 appearances after being called up in June. He suffered a season-ending shoulder strain in August. He sat around 96 mph on the fastball and got excellent results on a mid-80s breaking ball. Perkins’ minor league numbers suggest he might be better suited in the bullpen, however. He walked 11.3% of Triple-A opponents and has posted double digit walk rates in three straight seasons.
Luis Medina and Joey Estes have some MLB experience and hold 40-man roster spots. Medina is out of options and missed all of last season rehabbing Tommy John surgery. He’s probably ticketed for long relief to open the season, while Estes could be on the fringe of the 40-man roster. Medina is the only member of this group aside from the three veterans who cannot be optioned.
The highest-upside arms in the organization are still in the minor leagues. Gage Jump and Jamie Arnold are two of the top pitching prospects in the sport. Jump has an outside chance to break camp after posting a 3.64 ERA while striking out a quarter of opponents over 20 Double-A appearances. He’s not on the 40-man roster, but each of Braden Nett, Henry Baez and Chen Zhong-Ao Zhuang are. They’re solid prospects (Nett and Baez, in particular) who have Double-A experience and could get some consideration to break camp if they really impress during Spring Training.
A’s To Promote Luis Morales
The Athletics are calling up pitching prospect Luis Morales prior to tomorrow’s game with the Diamondbacks, according to reporter Francys Romero. Morales will be making his Major League debut whenever he makes his first appearance in a game. No corresponding moves will need to be made, as the Athletics’ deadline trades have left space on both the 26-man and 40-man rosters.
Mason Miller was one of the players dealt, as the A’s sent Miller and JP Sears to the Padres as part of a blockbuster six-player swap. The 22-year-old Morales may slide right into Miller’s old bullpen role, if perhaps not specifically as a closer, given how Morales has been operating as a multi-inning reliever over his last month of Triple-A action. While Morales had operated almost exclusively as a starter before the role change, the decision was made to help manage Morales’ innings. He has already set a high career high with 89 1/3 frames in 2025, and the A’s are interested in seeing how Morales can now fare against big league hitters.
MLB Pipeline ranks Morales as the 80th-best prospect in baseball, and he also sat 79th in Baseball America’s preseason top-100 ranking. The A’s gave the Cuban-born Morales a hefty $3MM bonus as an international prospect in 2023, and he has been living up to expectations by making a pretty quick rise through the farm system. The 2025 season has seen Morales pitch at the Double-A and Triple-A levels for the first time, and he has a 3.73 ERA, 9.6% walk rate, and 29.2% strikeout rate over his 89 1/3 combined innings at the two affiliates in Midland and Las Vegas.
Morales’ control has been average at best, but he brings heavy velocity with a fastball that sits in the 96-97mph range, and cracking the 100mph threshold seems a possibility with this temporary move to the bullpen. His slider is another quality pitch and his changeup has promise, but is a little more inconsistent.
Pipeline’s scouting report notes that Morales cut back to just these three pitches, and while he could reincorporate his curveball or another pitch down the road, narrowing an arsenal is usually a sign that an organization could be ultimately viewing a pitcher as a reliever over the long term. The A’s will surely give Morales a chance to stick as a starter before considering a permanent move to the pen, of course, and he might well get a couple of starts in the majors in an early audition for 2026.