"It's a shame," Clemons' agent, Donal Henderson, told Rapoport. "He's worked so hard to get there."
Henderson said Clemons' knee is not sore but feels "loose." Henderson said it's believed to be an ACL issue, and he blamed the "crappy" conditions at FedEx Field for contributing to the injury. Clemons was wearing 3/4-inch cleats to get footing on the sloppy turf.
If an MRI confirms an ACL tear, Clemons will undergo surgery in the near future. Given the timing, Clemons' availability for the start of training camp next summer also will be put into question.