Adrianza (back) was released by the Angels on Saturday.
Adrianza (back) had not yet resumed baseball activities as of May 28, per MLB.com.
Adrianza received an injection in his back Thursday, Rhett Bollinger of MLB.com reports.
The Angels placed Adrianza on the 10-day injured list Friday with back spasms, retroactive to Thursday.
Adrianza said Friday that he has experienced issues with his lower back, Sam Blum of The Athletic reports.
Adrianza is out of the lineup for Sunday's game against the Guardians.
The Angels selected Adrianza's contract from Triple-A Salt Lake on Sunday.
Adrianza agreed to a minor-league contract with the Angels on Friday that includes an invite to major-league spring training, Jeff Fletcher of The Orange County Registerreports.
Adrianza elected free agency Monday, Justin Toscano of The Atlanta Journal-Constitution reports.
Atlanta reinstated Adrianza (shoulder) from the 60-day injured list and designated him for assignment Monday, Justin Toscano of The Atlanta Journal-Constitution reports.