The Dodgers designated Thomas for assignment Saturday.
Thomas spent some time with the big-league club in late August but was optioned to Triple-A Oklahoma City on Sept. 1. He'd been hitting well since his return to OKC, going 4-for-15 with three homers, four RBI and a stolen base over three games, but Los Angeles DFA'd him to make room on the 40-man roster for Bobby Miller (shoulder), who was activated from the 60-day injured list.