Chiefs QB Patrick Mahomes has been diagnosed with a dislocated patella (knee cap), according to NFL Network's Tom Pelissero. Mahomes will undergo an MRI to check for ligament damage. Former NFL head team Dr. David Chao says that Mahomes will eventually need surgery, which will sideline him for 6 to 9 months. It's possible, though, for Mahomes to return in 4+ weeks and play through the injury. We'll continue to update this situation as we learn more.