Redskins rookie quarterback Robert Griffin III is aware of the dangers of running the football since he tore the ACL in his right knee in 2009 on one of his 528 carries while at Baylor. While Shanahan wants to take advantage of Griffin's speed, he also knows the Heisman Trophy winner is capable of beating teams with his arm. (Andrew Harnik/The Washington Times)

Photo by: ANDREW HARNIK

Redskins rookie quarterback Robert Griffin III is aware of the dangers of running the football since he tore the ACL in his right knee in 2009 on one of his 528 carries while at Baylor. While Shanahan wants to take advantage of Griffin's speed, he also knows the Heisman Trophy winner is capable of beating teams with his arm. (Andrew Harnik/The Washington Times)