Treinen (0-1) was tagged with the loss in relief Saturday against the Rockies after allowing one run on one hit while fanning three across one inning.
Treinen entered the game in the eighth inning looking to keep the Dodgers in the game, but he gave up the game-winning run on a solo home run from Connor Joe. Treinen is not expected to have lots of save situations as long as Craig Kimbrel is healthy, but he should work as one of the Dodgers' main late-inning arms.