Pirates, Moroff beat Nats

WASHINGTON — Nationals ace Max Scherzer was pulled with a hamstring cramp while tuning up for the playoffs, and NL East champion Washington lost to the Pittsburgh Pirates 4-1 Saturday night.

The Nationals said Scherzer was sent for a precautionary MRI on his right hamstring. Manager Dusty Baker didn’t elaborate on the severity of the injury.

Scherzer, who leads the NL in strikeouts and is 16-6 with a 2.51 ERA, was preparing for the Nationals’ matchup against the Chicago Cubs in the best-of-five Division Series that begins Friday in Washington. But the two-time Cy Young Award winner stumbled on a 2-2 pitch to Josh Bell in the fourth inning, briefly hopped around the mound and bent over at the waist.

Scherzer then began to throw a full-count pitch, but abruptly stopped when time was called.

Baker, pitching coach Mike Maddux and team trainers visited the mound and quickly took out Scherzer.

Scherzer had given up one hit and struck out five, raising his total to 268, in 3 1/3 scoreless innings when he was hurt.

The Pirates rallied with four runs in the ninth inning off Brandon Kintzler (2-1). Sean Rodriguez singled home the tying run with Pittsburgh trailing 1-0 and down to its final strike. Max Moroff later hit a bases-loaded triple.

George Kontos (1-6) got the win and Felipe Rivero had his 21st save.

Ryan Zimmerman hit an RBI single in the second off Jameson Taillon, who gave up four hits in seven innings.

Harper in lineup

A day after saying he wouldn’t use Bruce Harper, Baker started the 2015 NL MVP. Harper returned this week from a hyperextended left knee that kept him out more than six weeks. Harper posted his second consecutive 0-for-4 day at the plate.

Baker said Harper came through Friday’s game with limited soreness and is getting the outfielder ready for the playoffs.

Trainer’s room

Pirates: CF Andrew McCutchen was scratched just 90 minutes before the game with left foot discomfort after fouling a ball off that foot in Friday’s loss to Washington. McCutchen, in the original lineup batting third, was seen limping badly in the Pirates clubhouse before the game.