Zac Gallen, the veteran right-handed pitcher for the Arizona Diamondbacks, is facing yet another setback as he deals with elbow inflammation. This injury has forced him to withdraw from his scheduled start on Sunday, raising concerns about his availability for the remainder of the season. Gallen's struggles this year have been particularly notable, marking his worst season as a big leaguer. With a 6.34 ERA across 19 starts, he's in the 2nd percentile in terms of xERA, and his xFIP and SIERA are both near 5.00. His strikeout rate, a career-low at 13.9% in 98 innings, is a stark contrast to his previous seasons, where it never dipped below 21%.
What makes Gallen's situation particularly intriguing is the decline of his top three pitches. Opponents are hitting .331 with a .545 SLG against his fastball, and both his curveball and slider have a -7 Run Value, according to Statcast. This has led to a total Run Value of -19, the fourth-worst among qualified pitchers. The question arises: what has caused this sudden drop in performance?
Gallen's journey to the Diamondbacks was not without its challenges. After a less-than-stellar 2025 campaign, he entered free agency with reduced appeal. He ultimately signed a one-year deal with Arizona, rejecting the qualifying offer and settling for $22.025MM. This decision, however, has not paid off as expected, with his performance this season falling short of expectations.
The 30-year-old has a history of avoiding significant injuries with the Diamondbacks. A brief elbow sprain in 2021 and a hamstring strain in 2024 were the only major setbacks. Yet, the elbow inflammation this time around is a cause for concern, especially given the impact on his performance. It's a reminder that even the most durable athletes are not immune to the vagaries of the sport.
In the meantime, the Diamondbacks are turning to Mitch Bratt, a left-handed pitcher, to fill the void. Bratt made a respectable debut, tossing three innings of one-run ball against the Cardinals in late June. With a 2.41 ERA and a 25.2% strikeout rate in 13 starts at Triple-A this year, he's poised to make a significant impact. The question remains: can Bratt fill the void left by Gallen's absence and help the Diamondbacks turn their season around?
From my perspective, the story of Zac Gallen serves as a reminder of the delicate balance between talent and durability in professional sports. While his performance this season has been disappointing, it's also a testament to the challenges that athletes face in maintaining peak performance over the course of a long season. As we continue to follow his journey, we're reminded of the importance of resilience and adaptability in the face of adversity.
