MLB: Colorado 3, New York Mets 1

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NEW YORK, Aug. 20 (UPI) -- Jonathan Herrera scored the go-ahead run on an eighth-inning passed ball Monday and the Colorado Rockies went on to a 3-1 win over the New York Mets.

With the score tied 1-1, Herrera led off the eighth by laying down a bunt single, took second on pitcher Josh Edgin's fielding error on the play and went to third on Chris Nelson's pinch-hit sacrifice. With Charlie Blackmon at the plate, Herrera scored when Mets catcher Kelly Shoppach couldn't handle a pitch from Edgin (1-1).

Ramon Hernandez added an insurance run with a ninth-inning RBI single and the Rockies hung on to claim the opener of a four-game series.

Tyler Colvin homered to provide Colorado's other run.

Rex Brothers (7-2) earned the victory with 1 1/3 scoreless relief frames. Matt Belisle got the final out of the eighth inning and Rafael Betancourt earned his 24th save despite allowing a hit and a walk in the ninth.

Daniel Murphy got the only RBI for the Mets, who fell to a season-worst eight games under .500 (57-65).