Patrick Mahomes sets Chiefs' single-season passing yards record Unknown 01:44 The 23-year-old quarterback set the Chiefs' franchise record for passing yards in a single-season in the first half against the Seahawks. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsFootball Manager 2018: Release date, devices, cost & new featuresHazard has 'extra quality' to take Chelsea to the top - LampardNaby Keita's story: From dodging cars in Guinea to fast lane of Europe's eliteFootball Manager 2018: Best wonderkid strikers, midfielders, defenders and goalkeepersFootball Manager 2018 Review: The most realistic and most difficult FM yetFootball Manager wonderkids: Where are the likes of Samba, Adu & Kallstrom now?