Reed was optioned to Triple-A Syracuse on Friday, Mike Puma of the New York Post reports.
Reed was called up Wednesday, but he failed to make his team debut. He recorded a 3.38 ERA and 1.31 WHIP in 5.1 innings across six appearances (one start) with the Dodgers earlier this season. His demotion will make room on the active roster for Edwin Diaz, who was reinstated from the paternity list Friday.