The stepfather of Patrick Mahomes' longtime girlfriend Brittany Matthews suffered a medical emergency at Arrowhead Stadium on Sunday afternoon and died.
Matthews posted about her loss on social media Sunday night.
"Today is a day I will never forget," she wrote. "Directly after this picture I sprinted to the front entrance to see my step dad passed out! He did not come back from this and he was called to heaven today! I KNOW 100 percent he is so happy up there with his kids looking down on us cheering loud that his Chiefs won today! Thank you everyone for the prayers and sweet text! We will miss you Paul So So So much! I will take care of mom for you!"
Mahomes, who broke Len Dawson's 1964 single-season touchdown pass record in the win, wasn't available for interviews after the game because of the family emergency.
On Monday, coach Andy Reid expressed condolences for the family, and added that he didn't expect Mahomes to miss any practice time.
"We're sorry to hear what took place yesterday," Reid said. "Our prayers and blessings are with the family. I've talked to Patrick. They're doing well for the circumstance. As they go through this mourning period, our prayers and thoughts are with them."