Biggio elected free agency Friday, David O'Brien of The Athletic reports.
Atlanta optioned Biggio to Triple-A Gwinnett on Friday.
Atlanta selected Biggio's contract from Triple-A Gwinnett on Wednesday.
The Dodgers released Biggio on Thursday.
Biggio was designated for assignment by the Dodgers on Monday, Eric Stephen of SBNation.com reports.
Biggio went 1-for-3 with a two-run homer in Tuesday's loss to the Dodgers.
Biggio went 1-for-3 with a solo home run and a walk in Tuesday's 10-1 loss to the Phillies.
Biggio isn't in the Dodgers' lineup Tuesday versus the Diamondbacks.
Biggio is out of the lineup for Sunday's game against the Giants.
Biggio is out of the lineup for Wednesday's game against the White Sox.