According to ESPN NFL insider Adam Schefter, Patrick Mahomes’ new contract is, not only the largest contract in NFL history, but the largest in sports history as well. The deal Mahomes just signed has surpassed Angels center fielder Mike Trout (426.5 million) as the largest contract in North American history. According to Schefter: Patrick Mahomes had two years and $27.6 million left on his existing deal — $2.8M this year, $24.8M in 2021. His 10-year extension is worth over $400M, though it’s still uncertain how much over. So the lowest his 12 year-deal could be worth is $427.6 million. But will be more. This will make it the largest contract not just in NFL history, but in sports history. https://t.co/lKqNNqMGq7— Adam Schefter (@AdamSchefter) July 6, 2020 Compensation update: Patrick Mahomes’ 10-year extension is worth $450 million, sources tell ESPN.The injury guarantee is $140 million, per source.The contract does not contain language that ties its value to a percentage of the salary cap.Richest deal in sports’ history.— Adam Schefter (@AdamSchefter) July 6, 2020 Looking at the extension length alone, Mahomes’ deal is five years longer than any other player in the NFL. Top 5 NFL contract lengths Patrick Mahomes2031Ezekiel Elliott2026Lane Johnson 2025Christian McCaffrey2025Jaylon Smith2025 NFL Player Contracts by Comparison QB Matt RyanFalcons5 years$150M2019OLB Khalil MackBears6 years$141M2018QB Russell WilsonSeahawks4 years$140M2019QB Andrew LuckColts6 years$139M2016QB Jimmy Garoppolo49ers5 years$137.5M2017DT Aaron DonaldRams6 years$135M2018QB Matthew StaffordLions5 years$135M2018QB Jared GoffRams4 years$134M2019QB Aaron RodgersPackers4 years$134M2018 Facebook Twitter/X Email Post navigation Mahomes & Chiefs ink new MEGA-DEAL & richest contract in NFL history WATCH: Patrick Mahomes releases new video after agreeing to extension