Cincinnati, OH (SportsNetwork.com) - Washington Nationals star pitcher Stephen Strasburg left Friday's game against the Cincinnati Reds in the second inning with an apparent injury.

After allowing a home run to Joey Votto in the first inning, Strasburg walked Brayan Pena to lead off the second before departing with the team trainer. He was replaced by Taylor Jordan.

Entering Friday, the 26-year-old Strasburg was in the midst of a poor season, owning a 6.50 ERA -- more than twice his career average -- in nine starts.

The former No. 1 overall pick underwent Tommy John surgery in 2010 and missed most of the 2011 season. In 2014, he set new career highs with 34 starts and 215 innings pitched.