Welcome to the Black Friday edition of the Week 13 grades! After giving us a traditional feast of games on Thanksgiving, the NFL returned with its newest tradition: A Black Friday game. And it was a wild one with the Kansas City Chiefs holding off the Las Vegas Raiders 19-17 in a game that wasn't sealed until Nick Bolton recovered a Raiders fumble in Kansas City territory with just 11 seconds left to play.

Still, it ended in a stinging defeat at one of the Raiders' hated rivals. Here's five takeaways from the Raiders' Week 13 loss at Kansas City. Unfortunately, the end-of-game blunder involving center Jackson Powers-Johnson,