Marriner took an official visit to the school earlier this season and came away very impressed.
"I had been thinking about it for a while," he said. "I actually took my official visit up to UConn. When I went up there, I loved it. I know it's far away from home, but at the same time the campus is great – the education is great – the coaches are great. I felt like that is where I should be."
"From me just being there, I liked the area. Then, just seeing the players when they were walking to the stadium and how they were dressed up. Just seeing that – and how they get prepared on game day – and just watching the game. I also got to talk to the some of the players and walk around campus – it was amazing. The facilities also blew me away."
Marriner's relationship with the Huskies' coaching staff played a big role in his decision.
"My relationship with the coaching staff has grown a lot over the last couple of months," said the 5-foot-10, 188-pound Marriner. "First, I was just talking to Coach Perkins about trying to get up to UConn. Then, I was finally able to get up there and meet all the coaches. It has been getting better and better."
Head coach Paul Pasqualoni also impressed Marriner.
"I've seen what he has done and I was actually able to hear him speak after they played N.C. State," said Marriner. "I liked his whole approach even after a loss, how he took it, and how he was building his team up to win the next game. I just think he's doing what he needs to do to put the program in the right direction."
Marrriner would like to play as a true freshman, but is not opposed to redshirting.
"Truthfully, I'm a competitor," he said. "So, I do want to come and start playing, but at the same time it just depends on how everything goes."
The Western Branch star has already planned a return trip to the Connecticut campus.
"Most likely, I'm going to go back up there in December or January with my mom," he said.
When asked about his commitment to UConn, Marriner quickly responded.
"I'm not taking any more official visits," he said. "I'm done."
With recruiting out of the way, Marriner is focused on the rest of his season at Western Branch.
"Right now, we are 5-2," he said. "I want to rush for 2,000 yards and I still have a chance to do that. From this point on, I want to go 10-2."
Marriner has rushed 1,113 yards and 11 touchdowns. Western Branch takes on Nansemond River this Friday. He choose UConn over offers from Air Force, Navy, Old Dominion, Temple, VMI, and Wofford.