Rookie linebacker Ryan Kerrigan first training camp practice ended on a bad note.
Kerrigan suffered a hyper-extended knee and bone bruise during Friday's practice and could be sidelined for a couple days, according to head coach Mike Shanahan.
"I think he's okay," Shanahan said. "The MRI was negative but he's still a little bit sore."
Kerrigan, the Redskins' first-round pick in the 2011 NFL Draft, had signed his rookie contract on Friday morning, making himself available for the team's first training camp practice.
After practice, Kerrigan spoke with a Redskins.com reporter but did not mention the injury.
"It was good to get the first practice under my belt," he said.
Kerrigan was supposed to hold a media session with reporters but it was cancelled.
Several other Redskins players suffered heat-related injuries during Friday's practice, including nose tackles Anthony Bryant and Chris Neild. Anthony Bryant was carted off mid-practice and did not return.
