2025 Christmas Day NFL betting, odds: Kansas City Chiefs are largest home underdogs since 1977 vs. Broncos The Chiefs are historic home underdogs on Christmas against the Broncos. Content Original Link: https://sports.yahoo.com/nfl/betting/article/2025-christmas-day-nfl-betting-odds-kansas-city-chiefs-are-largest-home-underdogs-since-1977-vs-broncos-202657237.html