The Dodgers outrighted Barnes to Triple-A Oklahoma City on Thursday.
It's the second time in the last few weeks that Barnes has been booted off the Dodgers' 40-man roster. He wound up re-signing on a minor-league contract the first time and could do so again. Barnes has a 6.92 ERA and 6:7 K:BB over 13 innings covering five appearances between the Cubs and Dodgers this season.