Kansas City Chiefs' quarterback Patrick Mahomes took to social media to stir up the GOAT conversation with Tampa Bay Buccaneers quarterback Tom Brady. Brian Westbrook joins First Things First to discuss what it would take for Mahomes to eventually surpass Brady as the GOAT. #FirstThingsFirst #NFL #PatrickMahomes #TomBrady #Chiefs #Buccaneers #BrianWestbrook SUBSCRIBE to get the latest from First Things First: foxs.pt/SubscribeFIRSTTHINGSFIRST The all-new FOX Sports App, built for the modern sports fan: tinyurl.com/y4uouolb ►Watch the latest content from First Things First: foxs.pt/LatestOnFIRSTTHINGSFIRST ▶The Herd with Colin Cowherd’s YouTube channel: foxs.pt/SubscribeTHEHERD ►UNDISPUTED’s YouTube channel: foxs.pt/SubscribeUNDISPUTED ▶Speak for Yourself’s YouTube channel: foxs.pt/SubscribeSPEAKFORYOURSELF ►FOX Bet Live’s YouTube Channel: foxs.pt/SubscribeFOXBETLIVE ►Club Shay Shay’s YouTube Channel: foxs.pt/SubscribeCLUBS...