At Georgia Southern, John competed for four years and recorded 302 tackles, tying for fifth all-time in school history.

He was honored by being named the Football Coaches Association Division I-AA All American team for the 2006 season.

John has participated in mini-camps with the Buffalo Bills and was a member of the 2007 Tampa Bay Buccaneers training camp.

Mohring has also been a member of the Orlando Predators, Grand Rapids Rampage, and Montreal Alouettes.

His cousin Michael Mohring played for the Oakland Raiders and San Diego Chargers.