Biggio agreed to a minor-league contract with the Royals on Sunday.
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.