Culberson declined an outright assignment to Triple-A Gwinnett on Thursday and elected to become a free agent, Justin Toscano of The Atlanta Journal-Constitution reports.
Culberson was designated for assignment by Atlanta on Monday, shortly after the NL East leaders acquired Nicky Lopez in a trade with the Royals. Culberson 34, has batted just .248/.294/.375 over his last 396 major-league plate appearances dating back to the beginning of the 2021 season.