The 6-foot-3, 292-pound four-star announced Wednesday morning that he has decided to sign with Arizona over finalists Cal, Mississippi State, and Washington State.
Griffin's visit two weeks ago put the Wildcats over the top, as he was impressed by numerous aspects of his weekend.
"Probably the highlight was just getting some more one-on-one time with the staff and getting to know them as people and not just as football coaches," Griffin said.
"The facilities are beautiful and probably the best facilities I've seen. They put in like $85 million for them and they're really nice."
Arizona basically only plays with three defensive linemen and it has been clear with how Griffin will git in with the defense.
"They want me as a defensive end," Griffin said. "I got to talk with Jeff Casteel too and he's a real cool guy. He's really straight forward, told me that they needed me and how they want to use me and that I'm a perfect fit."
Griffin is hoping that his high school success carries over to college, as he has plenty of experience winning championships.
"It's a fun experience every year that I've done it," Griffin said of winning the state title. "It was a little different this year, because I had to play both ways, so I didn't really get to sit out like I did last year when the offense had the ball.
"I had to go the full game and special teams, but it was fun. There's no better feeling than going out the right way your senior year, and win one with your boys. We showed really who the top dog is, again, because you have to prove it to everyone."
With the signing of Griffin, Arizona is getting a player that can likely contribute immediately and is considered to be one of the top defensive linemen in the west.
"Griffin has good size for a tackle, a great motor and moves very well," his Scout.com evaluation states. "He has been well coached, plays with great technique and knows how to use his hands to get blockers off him. He ended with a good showing during the Semper Fidelis Bowl practices as well."