Dominguez (4-2) took the loss Saturday against the Cardinals, allowing a run on one hit while striking out two and walking none across 1.1 innings.
Dominguez gave up the game-winning run in the top of the ninth inning on a solo shot from Nolan Arenado. Since Corey Knebel lost the closing job, Dominguez has shared the closer role with Brad Hand. Dominguez still has a solid 1.80 ERA and has converted two of his three save chances on the season.