The Washington Nationals placed outfielder Bryce Harper on the 15-day disabled list with a knee injury.
Harper has been out for five games with bursitis in his left knee after colliding with the right-field wall at Dodger Stadium. The move was backdated to last Monday when the injury occurred. He will be eligible to come off the DL June 11.
The Nationals brought up right-handed relief pitcher Erik Davis from Class AAA Syracuse to take Harper's roster spot.
Harper, 20, is batting .287 with 12 home runs in 44 games.
With Jayson Werth already on the DL, the Nationals have been starting Denard Span, Tyler Moore and Roger Bernadina in the outfield.
Davis is 1-2 with a 3.00 ERA and seven saves with Syracuse. He will be needed for bullpen depth after starter Stephen Strasburg left Friday's game after just two innings with a stomach injury.