Milone, acquired from the Baltimore Orioles at the trade deadline, has a 14.90 ERA in three starts for National League East-leading Atlanta. He allowed eight runs in 3⅓ innings in the Braves' 29-9 victory over the Miami Marlins on Wednesday night.
The Braves recalled right-hander Huascar Ynoa to the active roster and outrighted utility man Charlie Culberson to the team's alternate training site.
Atlanta has six pitchers on the IL, including ace Max Fried, and the team has used 11 starters in its 43 games. Robbie Erlin was Thursday night's starter against the Washington Nationals after he worked three innings out of the bullpen on Monday.
Erlin lasted only 1⅔ innings in the Braves' 7-6 win over the Nationals, allowing five earned runs on six hits. He was followed by Ynoa, who went three innings, allowing one run on two hits.
The Associated Press contributed to this report.