As the Arizona Diamondbacks prepare to face the Colorado Rockies, the pitching matchup features Zac Gallen and Austin Gomber. Gallen, despite a 4-8 record and a 5.19 ERA, holds a solid track record against the Rockies, boasting a 6-0 record in his last ten starts against them with a 3.41 ERA. His ability to restrict Rockies hitters to a .233 average provides a promising outlook.

On the flip side, Gomber is making a return from a shoulder injury with a perfect start this season, having pitched five scoreless innings. Historically, however, he has struggled against the Diamondbacks with a 5.65 ERA in previous matchups. The upcoming games also feature Merrill Kelly and Brandon Pfaadt for Arizona against Colorado's Carson Palmquist and Antonio Senzatela, respectively.