Man, I love being right. NATIONALS' PHENOM STRASBURG LEAVES GAMES WITH ARM INJURY Philadelphia, PA (Sports Network) - Washington Nationals rookie phenom Stephen Strasburg left Saturday's game against Philadelphia with a strained flexor tendon in his right forearm. In the fifth inning, Strasburg's third pitch to Philadelphia right fielder Domonic Brown went for a ball, but the righty immediately winced in pain following the throw. He glanced down toward his elbow and began shaking his arm, but trainers and manager Jim Riggleman came out and replaced him with Craig Stammen. "On the changeup that we all saw, he felt a little discomfort in his forearm," said Nationals general manager Mike Rizzo. "It's a flexor tendon in his forearm. He's going to get an MRI tomorrow in D.C., and we will have more information after that." In 4 1/3 innings, Strasburg dominated the two-time defending NL champs, limiting them to two hits and one run while striking out six. The injury is similar to the one that cost A's pitcher Ben Sheets all of 2009. Sheets tore his flexor tendon at the end of 2008 before sitting out 2009, signing with Oakland and suffering the same injury in 2010, putting him on the shelf for the remainder of the season. Saturday marked Strasburg's third start since coming off the disabled list earlier in the season, as he had right shoulder inflammation. The first pick in the 2009 draft, Strasburg came into the game with a 5-3 record and 2.97 earned run average in 11 starts.