Charlotte Observer] According to Buffalo Bills sideline reporter Cynthia Frelund, Mayfield told her, “I'm gonna [expletive] them up” (In regards to the Browns) during a postgame conversation following the Panthers' 21-0 victory
Tabasco shots, baths and gross gloves - The best rituals and superstitions on all 32 NFL teams - ESPN
Baker Mayfield head-butts Panthers teammates wearing helmets
WATCH: Panthers QB Baker Mayfield Celebrates Win By Headbutting Teammates While Not Wearing Helmet
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Panthers QB Baker Mayfield celebrates Week 10 win with insane headbutts
Panthers' Mayfield stuns team with helmetless head-butts - ESPN
Carolina Panthers: Baker Mayfield bizarrely headbutts teammates WITHOUT his helmet in celebration
Baker Mayfield Headbutts Teammates While Helmetless After Dramatic Win - Sports Illustrated