Marino wanted to commit on his visit over the weekend but was told to go home and talk things over with his family first. The athlete decided to make the call to Coach Graham Monday night.
"I called him up last night and told him I was ready to commit," Marino said. "He was excited and said they were happy to have me. This is a dream come true for me, I'm so happy to be a Sun Devil. I just love the football program there and love everything about the school. I really like Coach Graham a lot and feel a strong connection to him and the rest of the staff.
"I'm still working on my grades and we talked about that. There's a chance I might not sign on Signing Day but Coach Graham said my offer isn't going anywhere and they'll be ready to take me as soon as I'm good to go. As soon as I'm cleared by their admissions, I'm going to sign and hopefully that's sooner than later."
A year ago, it didn't look good for Marino academically but he has made great progress and is on track to qualify according to Diablo coach Bob Johnson.
"He's going to get there, he has really worked hard," Johnson said. "I talked with Coach Graham as well and they love Garrett and they're going to stick with him and really want him bad. He's such an explosive kid, probably the strongest player in the county and his game film is just ridiculous.
"His grades scared away a few schools but everyone who saw his film couldn't believe how dominant he was. I know he mentioned he might not sign on Signing Day but whenever he's ready and is cleared, I know ASU will have a spot for him, that's what they told me and he's definitely worth waiting for, he's an incredible player."