Kyle Allen hit Olsen on a short pass and Olsen had room to run and started charging toward the first-down marker. About a yard or two short of the marker, Olsen took a vicious helmet-to-helmet hit from linebacker Ryan Anderson. Olsen fumbled on the play, and may have been knocked out by the hit. After being evaluated by athletic trainers, Olsen left the game and went into concussion protocol. He was ruled out for the rest of the contest. Anderson was ejected for the illegal hit. Thomas is next up if Olsen can't go in Week 14.