Richard Sherman and Michael Crabtree’s mutual dislike stems from an altercation at Larry Fitzgerald’s Charity Event last summer. Sherman’s brother told the Seattle Times that Sherman tried to shake Crabtree’s hand at the event and Crabtree responded by trying to start a fight.
"Sherman has been upset with Crabtree since last summer. Both attended Arizona star receiver Larry Fitzgerald’s charity event. While there, Sherman went to shake Crabtree’s hand, and Crabtree tried to start a fight, according to Sherman’s older brother, Branton. “I’m going to make a play and embarrass him,” Richard Sherman vowed that day."
Sherman taunted Crabtree and screamed about him on national television after the Seahawks win. The two later tweeted petty shots at each other because it’s 2014. We’d suspect Crabtree has a different interpretation about how the altercation began.