Dodgers' Michael Petersen: Optioned to Triple-A

The Dodgers optioned Petersen to Triple-A Oklahoma City on Friday.

Petersen was recalled from Triple-A on Monday, and he's allowed four runs across two outings since his promotion. Across 11 major-league appearances this season, he's posted a 6.43 ERA and 1.57 WHIP in 14 innings.