New Orleans Saints quarterback Derek Carr is in the concussion protocol after sustaining his second concussion in three weeks, according to Saints coach Dennis Allen. Carr left Sunday's game against the Detroit Lions and the Saints' Week 10 game against the Minnesota Vikings to go into the concussion protocol but sustained other injuries in both of those games as well.

The boos seemed to rain down on Derek Carr until Lions defensive tackle Bruce Irvin crashed down hard on top of the the Saints quarterback with a little more than 10 minutes left in New Orleans’ 33-28 loss to Detroit.

Derek Carr was injured on a big hit by Lions pass rusher Bruce Irvin, with Jameis Winston entering to replace him:

Jameis Winston is in at quarterback for the Saints after Derek Carr suffered an injury in the fourth quarter. As Carr was throwing a pass, Lions pass rusher Bruce Irvin delivered a brutal shot, landed on Carr with all his bodyweight, and was flagged for roughing the passer.

Bruce Irvin's past experience with Derek Carr gave him a bit of an advantage during Detroit's 33-28 win on Sunday.