Front-runner emerges to take fourth spot in Marlins rotation

The Marlins revealed back in December that they planned to stretch lefty A.J. Puk out and plug him back into a starting role after he’s spent his entire career to date in the bullpen. Puk, a former standout starter at the University of Florida and a starter for most of his minor league tenure, is now “a front-runner” to claim the fourth spot in Miami’s rotation, Barry Jackson of the Miami Herald reports.

Puk will turn 29 in April. He’s never made a big league start but has started 42 games in the minors — most coming early in his tenure. The former No. 6 overall draft pick (2016) moved to the bullpen in 2019 after undergoing Tommy John surgery the year prior. Puk took well to that relief role, debuting in the majors with 11 1/3 innings late in 2019. He held opponents to four runs on 10 hits and five walks with 13 strikeouts — good for a 3.18 ERA. He looked to have locked up a spot on the 2020 roster, but Puk experienced shoulder pain the following spring and wound up missing the season due to an eventual debridement surgery.

The 2021 season was a rough one for Puk, though that’s not entirely surprising for a pitcher who’d undergone Tommy John surgery and shoulder surgery within 24 months of each other. He split the year between Triple-A and the big leagues, posting an ERA north of 6.00 in both settings. The 2022 campaign finally brought a breakout for the talented but snakebitten southpaw; he pitched 66 1/3 innings out of the Oakland bullpen and worked to a 3.12 ERA with a 27% strikeout rate, 8.2% walk rate and 43.4% ground-ball rate.

The A’s, by then in the midst of a complete rebuild, traded Puk to the Marlins in exchange for outfielder JJ Bleday — another former top-10 overall pick (No. 4) who’d not yet lived up to the expectations associated with that lofty draft status. It worked out nicely for the Fish. In 56 2/3 frames, Puk logged a 3.97 ERA with far more encouraging secondary marks: 32.2% strikeout rate, 5.4% walk rate, 15.1% swinging-strike rate, 2.66 SIERA. Puk wound up leading the Marlins with 15 saves.

Clearly encouraged by the per-inning strength of those results, the Marlins will now try to maximize Puk’s workload by moving him into a starting role. Much has been made of the Marlins’ enviable pitching depth over the years, but Puk’s move to the rotation is in part due to the fact that Miami’s stash of promising young arms is no longer as deep as it once was.

Sandy Alcantara underwent Tommy John surgery and will miss the entire 2024 season. Pablo Lopez was traded to the Twins in exchange for Luis Arraez. Braxton Garrett is behind schedule in camp due to a shoulder issue and is unlikely to be ready for Opening Day. Top prospects Sixto Sanchez and Max Meyer have been slowed by injuries. Sanchez, in particular, hasn’t pitched since 2020. Another touted arm, Jake Eder, was traded to the White Sox for Jake Burger. Southpaw Trevor Rogers has struggled through injuries and poor results since his second-place finish in the 2021 NL Rookie of the Year voting.

If Puk is able to successfully move back into a starting role, it’d obviously be a boon for the Fish. It’s a move that could reap long-term benefits, too, as Puk is controllable through the 2026 season. The Marlins will presumably be careful with his workload after the lefty pitched just 59 1/3 innings last year between the majors and a brief minor league rehab assignment following a nerve issue in his elbow. But if he can progress to pitching 100-plus innings this year, it’s easier to envision any restrictions being removed for the 2025 campaign.

There’s some risk to the move, of course. Puk has a lengthy injury history and is no guarantee to hold up with a full rotation workload. By moving him to the starting staff, Miami is also notably weakening its relief corps. The Puk transition bodes well for Tanner Scott, who’ll likely spend his entire platform season before free agency as the Marlins closer. But beyond Scott, the Fish will rely on a series of arms with short track records and/or notable injury histories. Andrew Nardi, Anthony Bender, JT Chargois and George Soriano all have had big league success but have all yet to establish themselves as consistent, year-to-year performers.

Assuming the Marlins indeed stick with this plan, Puk will slot into the rotation behind Jesus Luzardo, Eury Perez and Edward Cabrera. The aforementioned Rogers and fellow lefty Ryan Weathers are the leading candidates for the fifth spot, Jackson notes, with Rogers a likelier fit than Weathers. Sanchez, once viewed as a rotation building block, is out of minor league options but figures to head to the bullpen if he’s healthy enough to make the roster. Whoever grabs the fifth spot will essentially be a placeholder for Garrett anyhow. That said, given workload concerns for Puk and the general frequency with which pitchers get injured, it’s likely that all of Puk, Rogers, Garrett and Weathers will wind up starting a fair share of games in South Florida this season.