O'Flaherty (shoulder) was released by the Braves on Friday.
O'Flaherty was placed on the 10-day disabled list Sunday with left shoulder rotator cuff tendinitis.
O'Flaherty (back) was activated from the 10-day DL on Friday.
O'Flaherty (back) will be activated from the DL on Friday, David O'Brien of The Atlanta Journal-Constitution reports.
O'Flaherty (back) began a rehab assignment over the weekend, Grant McAuley of 92.9 The Game reports.
O'Flaherty (back) was placed on the 10-day disabled list Saturday.
O'Flaherty has given up three runs over five innings to begin the season.
The Braves selected O'Flaherty's contract from the minors Sunday, MLB.com reports.
O'Flaherty has been told he will make the Opening Day roster, David O'Brien of The Atlanta Journal-Constitution reports.
O'Flaherty struck out two in a perfect inning of relief during Friday's Grapefruit League game against the Tigers.