[3] After graduating from Utah State, Detwiler made his pro debut for the Alabama Hawks of the Continental Football League in 1969.
Detwiler picked up the forced fumble and returned it twenty yards for a touchdown that put San Diego up 14-3.
After signing as a free agent with the Buffalo Bills in the offseason, he was waived during one of the final cut downs.
Seeking to get more chances as a starter, Detwiler was one of many hopefuls who jumped from the NFL to the newly formed World Football League.
He signed with the Hawaiians, where two of his fellow hopefuls where two former NFL quarterbacks, Edd Hargett and Jim Fassel.