Chiefs quarterback Patrick Mahomes landed the richest contract in American team sports history on Monday. The 2018 Super Bowl MVP signed a 10-year, $450 million contract extension worth up to $500 million with incentives. Mahomes dramatically raises the bar for quarterback salaries with his $45 million average yearly salary. The previous standard was $35 million per year, which came in the four-year extension Russell Wilson signed with the Seahawks in 2019.