Chelsea and the US national team winger or attacking midfielder born September 18, 1998.
Mahomes played most of the game and helped the Chiefs win 27–24, completing 22 of 35 passes for 284 yards with one interception.
After Smith was traded to the Redskins on January 30, 2018, Mahomes started. The Chiefs defeated the division rival Chargers 38–28 in his first game as quarterback.
Despite Tyreek Hill's first-quarter injury and Mahomes' second-quarter ankle sprain, Mahomes threw for 378 yards and three touchdowns against the Jaguars.
In week 2 against the Oakland Raiders, Mahomes threw for 278 yards and four touchdowns in the second quarter, the most since 2008. Mahomes had 443 yards.
The Chiefs exercised Mahomes' fifth-year option on April 30, 2020. He signed a ten-year extension worth $477 million and $26 million ibonuses July 6. Contract runs through 2031.
Week 2's Chargers game saw Mahomes' fourth fourth-quarter comeback. The Chiefs won 23–20 in overtime after trailing 9–17 in the fourth quarter. His NFL-record sixth 10-point comeback.
On December 27, 2017, the Chiefs announced that Alex Smith would rest and Mahomes would start against the Denver Broncos in week 17.