One of the best wide receivers in the NFL could miss some time during training camp. Minnesota Vikings star Justin Jefferson will undergo an MRI and be re-evaluated next week due to a mild right hamstring strain, head coach Kevin O'Connell announced Friday. The team held Jefferson out of practice Friday due to the injury.

Vikings receiver Justin Jefferson will miss some training camp time because of a strained left hamstring that coach Kevin O'Connell describes as "very mild." The team will re-evaluate Jefferson next week.