Doctors diagnosed Detroit Lions cornerback Drayton Florence with a concussion on Monday, according to Dave Birkett of the Detroit Free Press. The veteran left Sunday afternoon's game against the Green Bay Packers in the first quarter and never returned after being seen on the sidelines undergoing a concussion test.

It was a short return to the playing field for Florence, who had sat out the past two months while dealing with a broken forearm. That injury is healed up now, but the 31-year-old seems to be on course to miss time again considering that the Lions host the Houston Texans on Thanksgiving Day.

Over the first nine years of Florence's career, he missed just nine games during that entire time frame. If he's forced to sit out on Thursday, he'll be on the sidelines for his eighth game of the season, nearly doubling his games missed total in a single year.