Tanner B. Roark ( roh-ARK; born October 5, 1986) is an American professional baseball pitcher for the Washington Nationals of Major League Baseball. He played college baseball at the University of Illinois at Urbana-Champaign from 2006–2007.Roark played one season with the Southern Illinois Miners of the independent Frontier League in 2008. In 3 games, he was 0–2 with a 21.41 ERA. In just 9.2 innings, he gave up 23 hits along with 25 runs while striking out 11.Roark was drafted by the Texas Rangers in the 25th round of the 2008 Amateur Player Draft. In July 2010, he was traded along with Ryan Tatusko to the Nationals for Cristian Guzman. Wikipedia