Vikings Receive Alarming Justin Jefferson Injury News originally appeared on Athlon Sports. The Minnesota Vikings are handing the keys to their offense over to second-year quarterback J.J. McCarthy, and if he’s to be successful, he’s going to need a healthy complement of weapons.

Vikings head coach Kevin O'Connell announced on Friday that superstar receiver Justin Jefferson will miss some practice time during training camp with a mild left hamstring strain. Exactly how much time he'll miss is unclear,

Vikings WR Justin Jefferson strained his hamstring at training camp and will be held out of practice for a bit.