The Brewers put right-handed reliever Jim Henderson on the 15-day disabled list with a sore shoulder on Friday, a day after he got hit hard in a loss to the Reds.
Henderson gave up Brayan Pena's tiebreaking, two-run homer and four hits overall during the eighth inning of Cincinnati's 8-3 win on Thursday night.
He retired only two batters during a five-run inning.
Manager Ron Roenicke said Henderson has been bothered by tightness in the shoulder on occasion and had trouble getting loose.
The Brewers called up outfielder Caleb Gindl from Triple-A Nashville.
Milwaukee started infielder Mark Reynolds in right field on Thursday night because it was short-handed in the outfield.
Gindl was in the starting lineup on Friday against the Reds.