Hayes (foot) was seen wearing a walking boot following Miami's preseason loss to the Buccaneers on Friday, David Furones of the South Florida Sun Sentinel reports.
Hayes started at right tackle in the exhibition contest but limped toward the sideline after a play in the first half and subsequently went to the medical tent. He never returned to the contest, and the fact that he was in a boot postgame could mean that his injury is more than minor. Hayes has been competing for a depth role along the Dolphins' offensive line during training camp.