The Kansas City Chiefs and quarterback Patrick Mahomes have reached agreement on a 10-year contract extension that ties him to Kansas City through the 2031 season, league sources tell ESPN's Adam Schefter.

The Chiefs picked up Mahomes' fifth-year option for the 2021 season in April, putting him under contract for the next two seasons. The 10-year extension puts him under contract with the Chiefs for the next 12 seasons.

The Chiefs said they intended to sign their franchise quarterback to an extension but had previously indicated it might not happen until after this season, the story said. Mahomes, 24, was named Super Bowl MVP after Kansas City's 31-20 victory over the San Francisco 49ers to become the first quarterback in NFL history to win a league MVP and Super Bowl before turning 25. Mahomes became the youngest quarterback to be named Super Bowl MVP and was the league MVP in 2018. Of course, Mahomes is also a top-tier fantasy QB, currently second in our rankings behind Lamar Jackson.

Chiefs and QB Patrick Mahomes have reached agreement on a 10-year -- 10-year! -- contract extension that ties him to Kansas City through the 2031 season, league sources tell ESPN.

Patrick Mahomes will now be crushing it for fantasy drafters through 2031.

Damien Williams has been training for the upcoming season in Miami, as he has done in the past. For the second consecutive year, Williams is projected to be the Chiefs’ starter. That said, the Chiefs selected a running back, Clyde Edwards-Helaire, a few months ago with their first pick to close out the first round of the NFL Draft. Williams hasn’t made public comments since then, but the Chiefs understand this season will be a pivotal one for him, as he enters the final year of his contract.

The story said Williams has battled injuries over his career and both he and the Chiefs are looking for consistency. It's hard to believe Edwards-Helaire won't cut into Williams' workload, but with a potential shutdown of preseason games, Williams could start off with a lot of reps before Edwards-Helaire begins to make a dent later in the season. Either way, Williams drops in our rankings compared to last year, but we don't think the keys get handed over solely to Edwards-Helaire.