Aro agreed Thursday with the Braves on a minor-league contract, Anthony Fenech of the Detroit Free Press reports.
Aro agreed to a minor-league deal with the Padres on Thursday that includes an invitation to spring training.
Aro was slapped with a 50 game suspension after violating the minor-league drug policy, Pete Abraham of The Boston Globe reports.
Aro was reassigned to minor league camp Friday, Greg Johns of MLB.com reports.
Aro cleared waivers and was sent outright to Triple-A Tacoma on Wednesday.
Aro was designated for assignment by the Mariners on Thursday, Bob Dutton of the Tacoma News Tribune reports.
Aro was optioned to Triple-A Tacoma on Wednesday.
Aro was recalled from Triple-A Tacoma on Friday.
Aro has a 0.97 WHIP and 1.46 ERA after pitching 24.2 innings in 16 games at Triple-A Tacoma.
Aro was traded to the Mariners on Monday, Jon Heyman of CBS Sports reports.