Jayson Werth Alex Brandon/AP

The Nationals scratched right fielder Jayson Werth a few minutes before today’s first pitch. Werth had been in the original lineup despite leaving last night’s game in the ninth inning with cramping in his hamstring.  The Nationals have provided no official reason for Werth’s scratch, but he presumably still had soreness in his legs.

“It’s been a long time since I cramped up during a game,” Werth said last night. “Hopefully it’ll be nothing and I’ll be back out there tomorrow, but we’ll see. I don’t think it’s too serious.”

Roger Bernadina replaced Werth as the Nationals’ leadoff hitter. Bryce Harper moved to right field, with Bernadina in center.

Werth surely did not want to sit against Cardinals starter Jake Westbrook. In  his career, Werth was 4 for 4 with a homer and a double against him.