Now Mattes has handed those lessons down to his son R.J., who is one of the nation's top offensive line prospects.
At 6-foot-7, 260 pounds, Mattes has the frame and size necessary to develop into a solid Division 1-A tackle. He also has the advantage of having dad taking him out in the backyard and work him up.
"We go out to the backyard and we work on stuff all the time," Mattes told GSN last night.
He said he was excited to receive the offer from Michigan State and the prospect of playing in the Big Ten. "I never expected to receive this much attention," said the humble Mattes. "I had always hoped that I could go play college football but this is amazing, I'm loving every minute of it."
He holds offers mostly from ACC schools including South Carolina, Clemson, Virginia, North Carolina, North Carolina State, Wake Forest, East Carolina, Duke, Louisville, Maryland and Miami. He also has offers from Illinois and MSU in the Big Ten.
"Playing in the Big Ten would be amazing," said Mattes. "The stadiums are huge and they love their football."
Mattes says his strengths are his ability to move in space, he says he believes his footwork and his ability to slidestep in pass protection is his strong suit. He says he packs a punch in run blocking as well.
The native of Concord, NC says he will hit the road to attend some camps in the area and says there is a chance that he will get up to one of Michigan State's camps in June.
While he doesn't have a top ten or top five list, Mattes says Michigan State is among the legitimate contenders for his services and he was very excited to hear from them.
GSN will have more on this super talent in the coming days.