"It's been cool. I didn't know what to expect coming in, and it has been a lot of fun. It's cool to meet a bunch of new guys that I've heard about but have never met in person, guys that you will be facing in college," he said.
The 6-foot-5, 225-pound prospect recently gave his verbal to Oregon.
"I took my official visit two weeks ago. I really liked the players when I went down there for my visit. The coaches were really cool and the position I'll be playing really fits me. They want me to be a middle linebacker type, they will use me in a lot of different ways, a lot on special teams, just being able to come in and have the chance to play early," he said.
The trip spoke volumes to Mattingly, especially since he was sick throughout the weekend.
"I got strep throat when I was down there, but it was a good experience. I got to meet the players. I may try to take another visit to Eugene this spring," he said.
Mattingly has had the chance to talk with the coaches about their plan for him and feels optimistic about his future as a Duck.
"It all depends on how hard I work this spring. I think I have a good shot of playing as a freshman," he said.
Though the linebacker was once a Notre Dame commit, he is solid with Oregon, saying it's "most definitely" where he will be playing ball next year.