The Orioles acquired Heuer from the Brewers for cash considerations Monday and optioned him to Triple-A Norfolk on Tuesday.
Heuer has been traded twice since Saturday, after the Brewers initially acquired him from the Guardians over the weekend. He'll report to Norfolk but could eventually get a chance in Baltimore. The righty reliever has allowed five runs with a 6:5 K:BB over 9.2 frames in the majors this season.