O'Flaherty is 1/3 with a 6.52 ERA in 27 games. He allowed three runs in two innings against the Chicago Cubs on Saturday.
The Braves recalled right-hander Ryan Weber from Triple-A Gwinnett before Monday night's game against Cincinnati. Weber is 1-0 with an 8.38 ERA in four games with Atlanta this season. He has a 2.81 ERA in 13 games, including four starts, with Gwinnett.