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,

Minnesota coach Kevin O'Connell said Friday that receiver Justin Jefferson is dealing with a mild hamstring strain and will be held out of practice. Jefferson will be re-evaluated next week, but he should be fine for Week 1.

Superstar Minnesota Vikings wideout Justin Jefferson was held out of training camp practice on Friday with a mild hamstring strain, per head coach Kevin O'Connell, who provided more information to reporters.