ALLEN PARK — Detroit Lions center Graham Glasgow left Thursday’s practice in Allen Park to be evaluated for a lower leg injury, according to an announcement from the team.

Glasgow, who answered a major question mark by winning the starting center job after Frank Ragnow’s retirement , was injured during the final period of the day. It was unclear how, exactly, he suffered the injury, but he was slow to get up after a completion to wide receiver Kalif Raymond and was later helped off the field by a pair of trainers.

Should Glasgow have to miss extended time, it would be a major blow to the rhythm Detroit’s offense has established throughout camp. No other projected starter has any sort of meaningful center experience, which means the team would likely have to turn to a reserve — Kingsl

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