Peralta is dealing with right AC joint inflammation, an issue that has dogged him for over a month. The 31-year-old went to the IL with the same injury on May 24, and even though Peralta spent the minimum time on the shelf, his shoulder hasn’t healed since then. Lovullo did express hope Friday that Peralta would once again return after a short IL stay, though.
Peralta boasted a .309/.357/.524 line in 217 plate appearances when he initially went down, but that slash has dropped to .289/.352/.476 (112 wRC+) in 107 PA since his return. While that’s still quality production overall, it falls well short of Peralta’s numbers in comparison to last year, when he recorded a 130 wRC+ with 30 home runs. He has mustered just nine HRs this season while seeing his ISO drop from .223 to .187.
Arizona, which is three games out of the NL wild-card race, has often turned to the righty-hitting Tim Locastro in left when Peralta hasn’t been available. However, with right-hander Antonio Senzatela on the mound for the Rockies on Friday, the Diamondbacks started the lefty-swinging Jarrod Dyson.