Nats put P Mattheus on disabled list

Published August 26, 2011 5:23pm EDT | Updated November 20, 2014 6:11pm EST

The Washington Nationals placed right-handed day disabled list Friday with a right shoulder injury.

Mattheus, a 27-year-old rookie, is 2-2 this season with a 2.40 earned run average in 32 games for the Nationals.

He pitched to two batters in the eighth inning of Thursday's 8-1 loss to the Arizona Diamondbacks before leaving the game with tightness in his shoulder.