The Brewers reinstated right-hander Junior Guerra and first baseman/outfielder Eric Thames from the disabled list and optioned right-hander Brandon Woodruff and infielder Nate Orf to Triple-A Colorado Springs on Tuesday.
Thames went on the 10-day DL on July 14 with right hamstring tightness, the second time this year he's been on the DL. In his second season in Milwaukee, the 31-year-old is hitting .250 with 13 homers and 28 RBIs.
Guerra will start tonight against the Nationals, making his first outing since going on the DL on July 14 with right forearm tightness. The 33-year-old righty is 6-6 with a 3.23 ERA in 18 starts.