Nationals' Stephen Strasburg (calf) exits Thursday's game early

Washington Nationals pitcher Stephen Strasburg (calf) exited Thursday night's game against the Houston Astros after six innings.

What It Means:

Strasburg limped away from the mound after the sixth inning, after the Nationals' coaches and trainers came out to the mound to check on his left leg during the inning. Strasburg has encountered this problem before, but said he was not worried after the game.

Strasburg had 7 strikeouts, with just 1 walk, and 0 runs allowed through 6 innings. For the season, he now owns a 3.10 ERA (6th in the majors), 1.08 WHIP (Tt-5th), and a 28.6 strikeout percentage (6th) in 133.2 innings this season while going 10-4 across 22 starts.