Pittsburgh Pirates' Melky Cabrera (53), Bryan Reynolds, left, and Starling Marte celebrate the team's 2-1 victory over the St. Louis Cardinals Friday night.

ST. LOUIS — Adam Frazier opened the game with a homer, Starling Marte drove in the game-winner and Trevor Williams allowed one run in seven solid innings as the Pittsburgh Pirates beat the St. Louis Cardinals 2-1 on Friday night.

Marte’s RBI single off of Andrew Miller (1-2) broke a 1-1 tie in the eighth and helped the Pirates snap a two-game skid.

Williams (2-1) stranded seven runners through the first four innings, and pitched around two fielding errors in the fourth inning. He allowed nine hits and limited the Cardinals to one hit in seven at-bats with runners in scoring position.

The Cardinals finished with one hit in nine at-bats with runners in scoring position, one night after getting a whopping 11 hits in that situation. St. Louis lost for the seventh time in nine games.

The only run allowed by Williams was shift-aided. Paul DeJong grounded a slow roller to second, but Frazier was playing on the third base side of the bag and couldn’t get to the ball in time to make a throw.