Rockies rookie pitcher Jon Gray is learning as a fledgling major leaguer. What he learned Monday night was that his bullpen is not very good.

Gray left after six innings of one-hit ball against the Mets in which he allowed one run with two walks and five strikeouts. He departed with a lead that the relievers turned into a no-decision and team defeat.

Only a Travis d'Arnaud home run in the second inning prevented Gray from hurling no-hit baseball in his second-ever start. He retired the Mets in order in the first, fourth and sixth.

Gray has yielded just three runs in 10 innings since his promotion, but has neither a loss nor a win on his ledger.