San Francisco 49ers star running back Christian McCaffrey is questionable for Week 1 against the Seattle Seahawks . However, he told reporters on Friday that the injury is "nothing serious" and that he feels good ahead of his team's season-opener this weekend.

"Nothing serious," McCaffrey told reporters . "I feel great where I'm at. Unfortunately, when you have the injury history that I have, sometimes when you don't practice things get blown out of proportion. Like I said, I feel great."

Reporters saw McCaffrey warming up on a side field before the 49ers' team walk-through on Friday, but he did not officially practice. The news came less than 24 hours after he was listed as limited on the team's injury report.

"He's questionable" 49ers coach Kyle Shanahan said. "Questionabl

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