Nationals' Harper leaves game with knee injury

(Photo by Greg Fiume/Getty Images)

(TSX / STATS) -- WASHINGTON -- Nationals right fielder Bryce Harper left Washington's 3-1 victory over the San Francisco Giants on Saturday night in the first inning with a left knee injury after his left foot slipped on the first base bag as he tried to beat out a groundball to first baseman Ryder Jones.

Harper suffered a hyper-extended knee, according to Washington manager Dusty Baker. An MRI was scheduled for Sunday.

"We know he hyperextended it when he slipped going across the bag. He's going to get an MRI," manager Dusty Baker said. "We just ask for prayers that it's not serious. We're just urging everybody out there that are Nationals fans and baseball fans to say a prayer for him tonight because he was in obvious pain out there. We're just hoping for the best."

On the play, Jones fielded the ball and beat Harper to the bag as pitcher Jeff Samardzija raced over to cover the bag just in case. Harper fell to the ground and held his left knee for several minutes after making the second out.

He was helped off the field and did not put any weight on his left leg as athletic trainer Paul Lessard and hitting coach Rick Schu helped him to the clubhouse.

The start of the game was delayed 3 hours, 1 minute by rain Saturday and there was a light rain in the top of the first inning.

Harper is hitting .326 with 29 home runs and 87 RBIs in 106 games and 402 at-bats for the first-place Nationals.

Rookie Andrew Stevenson came on to play center field in the second and Brian Goodwin moved from center to right.

Updated August 13, 2017