Patriots tight end Rob Gronkowski returned to practice Sunday and appeared to be working in full pads without any limitations. Gronkowski went through agility drills, ran some routes and working on his blocking during the window of practice was is open to the media. The tight end is working his way back from offseason back surgery and was recently added to the 53-man roster after spending the offseason on the physically unable to perform list. The Patriots open the season this Sunday in Buffalo against the Bills. It is not yet known if Gronkowski will be ready to play. Source: MassLive.com
