A.J. Puk 2025 Fantasy Baseball Outlook: Reliever In Line For Save Opportunities As Part Of A Committee
A.J. Puk ended the year as a key part of the Diamondbacks bullpen. Early struggles and injury meant Puk started just four games before reverting to a relief role in Miami. He then excelled in Arizona following the July trade. In 27 1/3 IP, Puk had a 0-1 W-L record, 1.32 ERA, 0.73 WHIP, 43 Ks, and two saves. Puk also tallied seven holds for the Diamondbacks. Puk's 29.9% K% last year ranked in the 90th percentile, and this is why he should factor into high-leverage situations in 2025. Puk's 9.5% BB% (27th percentile) will cause some concern. But that was largely down to his struggles as a starter. Puk had a 5.1% BB% as a reliever in 2024. Being a leftie with elite strikeout numbers does mean the Diamondbacks will utilize Puk in key moments of games. We probably won't see Puk used exclusively as a closer, a role likely to be shared with Justin Martinez. But with excellent strikeout numbers, excellent ratios, and a prominent role in the later innings of games, Puk will tally enough saves to warrant rostering in any fantasy league.
After beginning the 2024 season as part of the Marlins starting rotation,

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