Brian Kotloff
Saturday June 1st, 2013

(Stephen Dunn/Getty Images) Nationals outfielder Bryce Harper has been bothered by bursitis in his left knee since colliding with the wall at Dodger Stadium. (Stephen Dunn/Getty Images)

The Washington Nationals placed outfielder Bryce Harper on the 15-day disabled list on Saturday because of bursitis in his left knee.

The move is retroactive to May 27, as Harper has missed the team's last five games. The 20-year-old's knee has bothered him since his crash into the wall at Dodger Stadium on May 13.

In a corresponding move, the Nationals recalled right-handed pitcher Erik Davis from Triple-A for bullpen depth after ace Stephen Strasburg lasted only two innings in Friday's game, departing with a strained right oblique.

[JAFFE: Flatitude? Underwhelming Nationals stuck in neutral with few fixes in sight]

Harper, who is hitting .287 with 12 home runs and a .973 OPS in his second season, last missed time in August 2011 with a hamstring injury in the minor leagues.

https://twitter.com/Nationals/status/340906659771727873 He has hit .226 since the collision at Dodger Stadium and has experienced pain and swelling in the knee, according to The Washington Post's Adam Kilgore.

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