Matt Carpenter raced home to break a scoreless tie in the ninth inning when two Pittsburgh outfielders mishandled Jon Jay's single, and Mark Reynolds followed with a two-run homer to lift the banged-up St. Louis Cardinals to a 3-0 win on Monday night.

The Cardinals saw their magic number to clinch a third straight NL Central drop to two after getting to Pittsburgh closer Mark Melancon (3-2). St. Louis can clinch with a victory at Pittsburgh Tuesday night.

Cardinals outfielder Stephen Piscotty was carted off the field following a violent collision with teammate Peter Bourjos. The team said Piscotty has a head contusion and was taken to a hospital for observation.

Carpenter singled with one out and scored all the way from first when Pittsburgh right fielder Gregory Polanco overran Jay's hit and center fielder Andrew McCutchen couldn't pick the ball up cleanly.

Reynolds then drilled his 12th homer of the year.

Jonathan Broxton (4-5) earned the win.