The Milwaukee Brewers will likely be without Freddy Peralta for a "significant" period of time after an MRI scan revealed the extent of his right shoulder injury.

According to the Brewers, Peralta has a posterior shoulder strain.

"He is going to miss a significant amount of time," Craig Counsell said. "He will be back this season, but it's going to be a lengthy absence. We're confident that there's going to be no aftereffects to this thing, but it's going to take a while to heal and then build it back up."

Peralta exited his Sunday start against the Nationals complaining of tightness. He was 3-2 with a 4.42 ERA through his first eight starts.