Redskins head coach Mike Shanahan got involved in the action during the team's workouts on Monday. Mike Jones of the Washington Post reports the collision, which involved receiver Pierre Garcon and cornerback Brandyn Thompson, kept the 59-year-old on the ground for several minutes. Though Shanahan remained on the practice field, his scheduled session with the media after practice was canceled. "He showed some toughness. Got up. Stuck it out. So that's a (trademark) of our team," rookie quarterback Robert Griffin III said. "It was pretty scary to see two guys running full speed smack dab into your coach. We're glad he got up, glad he was fine. And hopefully he's fine tomorrow 'cause usually hits like that don't kick in until the next day."