SANTA CLARA, Calif. -- Detroit Lions All-Pro cornerback Darius Slay left Sunday's game against San Francisco with a concussion and was ruled out.
The brain injury occurred on a 3rd-and-1 in the third quarter when he went to tackle San Francisco fullback Kyle Juszczyk. He was on the ground for several minutes before getting up and walking to the team's medical tent.
After being examined in the tent, Slay walked to the locker room without his helmet.
With Slay out, the Lions had Teez Tabor and Nevin Lawson as the team's starting cornerbacks.