Rexpert

/ˈrɛkspə t/

A boxing fan that has never boxed a day in their life and believe that they are far more knowledgeable about the sport than what they actually are. They consistently use the boxing database 'BoxRec' in order to sound more informed about particular fighters when discussing boxing with their peers.

"He would have you believe that he's a specialist on the sport but really he's nothing but a rexpert."