The Brewers activated Megill (back) from the 15-day injured list Tuesday, Todd Rosiak of the Milwaukee Journal Sentinel reports.
Megill (back) will begin a rehab assignment with High-A Wisconsin on Thursday.
Megill (back) is scheduled to throw a live batting practice session Monday, Sophia Minnaert of Bally Sports Wisconsin reports.
Megill (back) will throw a bullpen session Saturday, Curt Hogg of the Milwaukee Journal Sentinel reports.
The Brewers placed Megill on the 15-day injured list with a lower-back injury, Sophia Minnaert of Bally Sports Wisconsin reports.
Megill earned the save Wednesday in a 5-4 win over the Blue Jays, working around a hit and a walk while striking out one in a scoreless ninth inning.
Megill (elbow) could be unavailable to pitch for a few days, Todd Rosiak of the Milwaukee Journal Sentinel reports.
Megill gave up a hit and struck out three in a scoreless ninth inning Tuesday to record his seventh save of the season in a 7-5 win over the Marlins.
Megill earned the save Tuesday against the Pirates, allowing a solo home run and no walks with two strikeouts across one inning.
Megill earned the save Friday in a 3-1 win over the Cubs, striking out one in a perfect ninth inning.