FOXBORO -- Patriots center Bryan Stork missed his the last four training camp practices, and the reason for those absences is a relatively concerning one.
According to Jeff Howe of the Boston Herald, Stork suffered a concussion during Saturday's practice, which was the first padded practice of the summer for the Patriots. The third-year lineman left midway through that session and has not participated in on-the-field work since. He was spotted on Thursday, behind the practice fields, speaking with a trainer.
Stork was disagnosed with a concussion during his senior season at Florida State, and he has been diagnosed with a concussion now in each of his first three professional seasons. Last season's head injury eventually forced Stork onto the short-term injured reserve list.
It's unclear when Stork will be healthy enough to return to play. In his absence, David Andrews has taken first-team repetitions at center. Before Stork's injury, he and Andrews split first-team reps in the middle of the offensive line.
Josh Kline and rookie Ted Karras have also taken snaps at center thus far in training camp.