The Dodgers placed Treinen on the 15-day injured list Saturday with right elbow inflammation.
Treinen seemed to be rounding into form for the Dodgers, posting a 2.61 ERA and 1.16 WHIP to go along with three wins and a save over his last 13 appearances, but his campaign is now on hold due to the elbow injury. Chayce McDermott replaces Treinen on the active roster and in the Los Angeles bullpen.