Stephen Strasburg hit a home run and pitched well against the Orioles on Sunday, but the excitement over the outing has been tempered. The right-hander felt tightness in his biceps. Davey Johnson did not appear overly concerned about the injury and does not anticipate Strasburg missing his next start. Strasburg said he was simply suffering from some fatigue and regretted he could not go deeper than the fifth inning in the game.