DENVER - Lucas Duda may wind up on the disabled list as soon as Saturday after he was forced to leave Friday night's game against the Rockies in the seventh inning with a recurrence of his back stiffness from earlier this month.

"It just kind of jammed up again," said Duda, who went 1-for-4 and drove in the first run of the Mets' 14-9 victory. As for the DL possibility, he added, "Hopefully not."

Duda missed six games with the back condition before returning to the lineup Tuesday in Baltimore. Terry Collins said the team will wait until Saturday to decide on Duda, who could be used to make room for the call-up of reliever Dario Alvarez from Triple-A Las Vegas.

Colon X-rays negative

Bartolo Colon showed his puffy right forearm to reporters after the game, pushing in with his finger. Fortunately for the Mets, X-rays were negative on the bruised spot, which was the result of a fastball from Rockies starter Jon Gray. Colon stayed in the game after he was nailed on the arm trying to bunt in the second inning, but was tagged for seven runs -- including three homers -- in 3 2/3 innings.

"It feels OK," Colon said through an interpreter. "A little swollen, but overall OK. It did affect me a little bit, but it had nothing to do with my performance. No excuse."

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Collins said the team's short bullpen made him lean more toward keeping Colon in, but only after his starter said he could continue.

Alvarez en route

The Mets announced after the game that lefthanded reliever Dario Alvarez will be activated for Saturday but had yet to reveal a corresponding move to clear a roster spot. With Matt Harvey being skipped for Sunday and Logan Verrett moving from the bullpen to take his place, the Mets needed relief help, especially at a launching pad like Coors Field.