Gallen has a career 3.12 ERA against the club that drafted him in St. Louis. His most recent start was a six-inning, seven strikeout shutout in 2024. RHP Miles Mikolas (3.77 ERA)

Arizona manager Torey Lovullo had Jose Herrera catch Gallen for Friday's series opener against St. Louis, after the pitcher had struggled in his previous outing, Joe Harris of MLB.com reports. The right-hander threw five strong innings before running into trouble in the sixth in a 4-3 loss.

Diamondbacks starter Zac Gallen threw five shutout innings to start his night, but the Cardinals rallied for four runs off him to snatch a win.

A rizona Diamondbacks starter Zac Gallen was locked up in a pitcher's duel against St. Louis Cardinals Miles Mikolas Friday night. While it was Mikolas that blinked first, giving

Three players stand out due to their struggles, and Diamondbacks fans are fed up with their constant slumps.

Zac Gallen is coming off a so-so start as far as numbers go, with four runs and 10 hits allowed in 5 ⅔ innings of a loss to the Dodgers on May 11.

Right-hander Zac Gallen has had two seasons so far in 2025. One season against New York teams, where he's allowed just two earned runs over 19.2 innings against

Arizona Diamondbacks starting pitcher Zac Gallen has been baffled by the worst early season struggle of his career.

The Diamondbacks' Zac Gallen had a shutout through five innings, but a three-run triple by the Cardinals' Nolan Arenado pushed St. Louis to victory.