Diamondbacks Activate Max Kepler Following 80-Game Suspension for Epitrenbolone

Outfielder Max Kepler returns to the Arizona Diamondbacks' active roster after serving an 80-game ban for a positive PED test involving epitrenbolone.

The Arizona Diamondbacks officially activated outfielder Max Kepler from the restricted list on Thursday, marking the conclusion of his 80-game suspension. This disciplinary action stemmed from a positive test for epitrenbolone, a metabolite of the anabolic steroid trenbolone, which was announced earlier this year. Kepler, 33, joined the organization on June 7 after signing a free agent contract and has spent the last several weeks preparing for his return through a formal rehabilitation assignment. During a 10-game stretch in the minor leagues, the veteran outfielder posted a .333 batting average and recorded two home runs, demonstrating his readiness for Major League competition.

Manager Torey Lovullo integrated the left-handed hitter immediately into the lineup for Thursday’s scheduled contest against the St. Louis Cardinals, slotting him into the fifth spot in the batting order and assigning him to left field. Although that specific game was postponed due to inclement weather, the roster moves associated with his return remained official. To create space for Kepler on the 40-man roster, the Diamondbacks transferred right-handed pitcher Ryne Nelson to the 60-day disabled list. Nelson is currently sidelined while recovering from a strained right elbow, an injury that has hampered his availability for the rotation.

Additional transactions accompanied Kepler's activation to ensure the active roster met league requirements. Arizona optioned outfielder Tim Tawa and left-handed pitcher Mitch Bratt to Triple-A Reno, while simultaneously recalling right-handed pitcher Juan Burgos to the big league club. These adjustments reshaped the bench and bullpen depth as the team enters the second half of the season. Kepler’s return provides a veteran presence to a lineup that has navigated various injuries and performance fluctuations throughout the first 80 games of the 2024 campaign.

Statistically, Kepler’s previous season with the Philadelphia Phillies saw him produce a .216 batting average across 130 games. During that tenure, he tallied 18 home runs and drove in 52 runs while playing under a one-year, $10 million contract. His career totals over 11 seasons include 179 home runs, 560 RBIs, and a lifetime .235 batting average. The outfielder’s power numbers have been a hallmark of his profile, particularly during his peak years when he consistently surpassed the 20-home run threshold.

Physically, the road back to the majors involved more than just serving a suspension. Kepler underwent core surgery during the most recent offseason to address a sports hernia that had affected his mobility. Furthermore, he has dealt with chronic left patellar tendinitis, a condition that required extensive physical therapy and management during his time away from the field. The Diamondbacks’ medical staff monitored his progress closely during his minor league stint to ensure his lower body could withstand the rigors of daily outfield duties.

Historical data highlights the rarity of Kepler’s specific suspension, as he is the first player to be sanctioned for epitrenbolone since MLB began disclosing specific substance details in 2005. Epitrenbolone is frequently associated with growth stimulants used in livestock, though it has also appeared in various unregulated bodybuilding supplements. Despite the controversy surrounding the positive test, the Diamondbacks front office has remained committed to the outfielder since his signing in June, viewing him as a low-risk, high-reward addition to the grass units.

Torey Lovullo emphasized that the veteran has been diligent in his preparation, noting that Kepler’s work ethic during the 80-game absence was exemplary. The coaching staff expects his power-hitting profile to bolster the middle of the order, providing protection for the team's core hitters. Lovullo mentioned that the decision to start him in left field was based on his defensive range and arm strength, both of which appeared sharp during his 10-game tune-up in the minors. The manager’s strategy involves utilizing Kepler’s experience to stabilize the outfield rotation during the upcoming road trip.

Kepler’s contract with Arizona represents a fresh start for the German-born player, who spent the majority of his career in the American League before his brief stint in Philadelphia. His ability to draw walks and maintain a disciplined approach at the plate is a metric the Diamondbacks hope will translate to their current offensive scheme. In his last full healthy season, Kepler ranked in the upper percentiles for exit velocity and hard-hit rate, traits that the Arizona scouting department identified as essential for their postseason push.

As the Diamondbacks move forward, the focus shifts to how Kepler integrates into the clubhouse culture following the lengthy ban. Teammates have expressed support for his return, citing his previous reputation as a professional and a productive teammate. The organization has handled the administrative side of the suspension by ensuring all protocols were met before he stepped back into the dugout. With the roster shuffle complete and the suspension served, the focus now turns to the diamond, where Kepler aims to prove his .333 minor league average was a true indicator of his current form.