Strasburg left his start Saturday after tossing 3.2 scoreless innings against the Giants due to an apparent injury. He appeared to be wincing and grabbing his left side after throwing a few pitches in the fourth inning. The Nats removed Strasburg from the game after his first pitch in an at-bat against Brandon Belt. With an off-day in the schedule next Thursday, the Nats could skip Strasburg's final turn before the All-Star break if needed. Tanner Roark replaced him in long relief, and Joe Ross could be summoned back to the big club if Strasburg's injury proves to be a serious one.