Tony Avelar/Associated Press

Jerick McKinnon's Knee Injury Reportedly Diagnosed as Torn ACL; Out for Season

Alec Nathan

San Francisco 49ers running back Jerick McKinnon reportedly suffered a season-ending torn ACL Saturday, per Ian Rapoport of NFL Network.

He sustained the knee injury while making a cut at 49ers practice Saturday, per Nick Wagoner of ESPN. 

"Something with a knee, we'll find out later," 49ers head coach Kyle Shanahan said before the diagnosis, per Wagoner. "We're nervous about it, that's for sure."

The 26-year-old previously gave the 49ers a scare when he suffered a knee injury late in training camp that required an MRI. Ultimately, the scans revealed a muscle strain, and he was given the all-clear to return to the field following some cautious maintenance work by the coaching and medical staffs. 

Since then, San Francisco's $30 million man has been trying to work his way back to full strength in hopes of getting ready for a Week 1 tilt against the Minnesota Vikings

The 49ers don't have another bona fide three-down back, so it will likely be up to Matt Breida and free-agent signee Alfred Morris to split the workload with McKinnon out.

   
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