Diamondbacks sign Max Kepler to one-year deal, but suspension keeps him out until June 25

The Arizona Diamondbacks signed veteran outfielder Max Kepler to a one-year contract Sunday, adding a seasoned left-handed bat and an experienced defender to their late-season options. Kepler, 33, is currently on MLB’s restricted list while serving an 80-game suspension for testing positive for a performance-enhancing substance. The D-backs said he can return on June 25, but he will be ineligible for postseason play.

From a roster-planning standpoint, Arizona’s move is essentially a regular-season bet with an October catch. Kepler’s status means he will not help the D-backs in any postseason games they reach later this year, even if his suspension ends during the regular season. That limits how the club might shape its playoff bench and leaves a question for what role they will want Kepler to fill once he is eligible.

Kepler’s path back to games lines up with the calendar the D-backs are likely aiming for in the standings. Once he is eligible June 25, Arizona gets an immediate option to stabilize production in the middle of the lineup and provide depth across the outfield. He is capable of playing all three outfield spots, and while his center field work has been limited in recent years, the D-backs can deploy him based on matchups and late-game needs.

The timing also matters because Kepler’s recent track record is built around situational power. In 2025 with the Philadelphia Phillies, he produced a.216/.300/.391 slash line with 18 home runs and 52 RBI across 127 games. The D-backs’ release also emphasized his career split profile, noting a.770 OPS against right-handed pitching compared to a.653 mark against left-handers, which suggests an obvious left-right lever for Arizona’s lineup construction once he is back.

Defensively, Arizona is betting that Kepler’s versatility can translate into value beyond batting. The team noted he has played primarily left field for Philadelphia in 2025, making 101 appearances at left, along with limited time in center and right. In earlier seasons with Minnesota and in the D-backs’ discussion of his recent profile, Kepler’s outfield work included stretch of right field play where he graded as above-average defensively, offering the D-backs a reason to trust his reads and routes in at least two corners.

Kepler’s career provides context for why Arizona would risk signing a player who cannot contribute in October. For his major-league tenure, he has averaged 24 home runs per 162 games, and the D-backs cited his 2019 Minnesota season as the high-water mark, when he hit 36 homers and drove in 90 runs while posting a.252/.336/.519 batting line. Even with his recent seasons under.700 OPS, the upside the D-backs appear to be targeting is a power surge from a veteran with an established role against right-handed pitching.

What to watch next is how Arizona integrates Kepler after June 25 while keeping its lineup stable during the final weeks of the regular season. The key questions are where he lands defensively most often, whether Arizona uses him in a matchup-driven role versus right-handers, and how the D-backs plan for the fact that, no matter how productive he is, his suspension status removes him from postseason eligibility.