As a junior, Mattison helped the Rangers two rounds deep in the Class 4A playoffs rushing for 1,943 yards and 27 touchdowns. The 6-foot, 228-pounder will be looked upon even more in 2012 as Smithson Valley makes the move from 4A up to class 5A.
Another team that has shown some interest to Mattison in the past is TCU. On Saturday the Horned Frogs held their last mini-camp of the summer and among hundreds of prospects, Mattison was considered one of the best even though his performance wasn't up to his standards.
"I thought I did good," Mattison said of the TCU camp. "I ran a 4.6, but usually at other camps I've ran in the high 4.3's and I was heavier at the other camps."
How did the TCU coaches respond to his camp performance?
"They were positive," he said. "I was one of three people they held after. They held back a quarterback, another runningback, a receiver and a cornerback."
Mattison says the Frogs hadn't shown much interest in him prior to the camp and despite being held afterward he still has some questions he needs answered before he can give a full evaluation on where TCU stands at the moment.
"Right now I'm going to wait and see because I didn't get all of what I was expecting to know today so I can't really say," Mattison said of TCU. "They really didn't talk to me as much as I was expecting."
Academics are the biggest factor Mattison is looking at when evaluating schools. Next, he's looking at a team that runs the ball and gives him a chance to play early.
"I'm looking at academics first then I'm looking at a school that likes to run the ball," he said. "I want to get on the field. Oregon State told me with the way I'm playing right now that I could be a true freshman and play."
Mattison is looking to break the 2,500-yard barrier in 2012.