He is in the NBA, working as the video coordinator for the Dallas Mavericks.
Mathis is more like an assistant coach than a VCR technician.
He handles player development. He scouts opponents. He rubs elbows on the team plane with Doug Christie, Keith Van Horn, Jerry Stackhouse and outspoken owner Mark Cuban.
If superstar Dirk Nowitzki has a flaw in his shot, Mathis works with him to correct the problem.
Heck, Mathis even gets the same meal allowance as the players - $102 a day - when he's on the road.
That is more money than he had in his checking account a decade ago.
"I'm really lucky to be with the Mavericks," Mathis said. "It's a great organization. There are no bad guys here, no prima donnas. Mark Cuban is a great guy. He doesn't have a bit of arrogance in him at all. He wears jeans and a T-shirt, and he welcomes people with open arms. He's great to the players and the coaching staff."
Mathis' biggest adjustment has been to the NBA's new dress code. His two suits get a steady workout.
"I have them on a rotating schedule," he joked.
Mathis gives a big assist to his father for helping him land a job in the NBA.
Mike Mathis was a long-time referee, working more than 2,000 games, 12 NBA Finals and three All-Star Games before hanging up his whistle in December of 2001.
"Dad helped me get my foot in the door," the younger Mathis said.