"Arm wrestling? Wanna arm wrestle later?" said the Ravens coach. "I'll wrestle you before," replied Jim Harbaugh, and his older brother laughed and said that he does recall how did that go.

"You been lifting? Wanna arm wrestle later? " John jokingly said. In 2015, Jim Harbaugh made the bold decision to leave the NFL and head to college football when the Michigan job became available ...