Now it has.
"I think it's definitely sunk in a lot more than it had on that Saturday night, but I'm sure over time it will probably do it a little bit more," Bradford said.
Bradford is only the second ever sophomore to win the Heisman Trophy, the second in a row after Tim Tebow won it last year.
And he enjoyed every minute of his monumental trip to New York City.
"Obviously, it was really exciting just getting to go up there and be a part of the whole Heisman weekend," Bradford said.
Winning the award was just an added bonus.
"To actually win the trophy, it was just a great weekend," Bradford said.
So, his play has been voted second to none.
Players and coaches around him say the same about his attitude.
"It makes it more fun to watch when you're working with a kid that understands all the pieces of the puzzle and how they all fit together and truly appreciates the people around him, [I'm] talking about his teammates and what they've done to help him, achieve goals as well," said quarterbacks coach Josh Heupel.
Heupel says his great preparation has been a result of his positive, mature attitude.
"I just couldn't be happier for him, just the way that he's worked since he's gotten here on campus, and during the off-season, the way he prepares every day or every week Monday through Friday leading up to Saturday's kickoff," Heupel said. "I think that's the thing that young kids on a football team need to take away from it, the way he diligently prepares in the off season [and knows] how to give himself a great opportunity for success.
And he has accomplished yet another feat in his young career at OU.
Bradford was also named the Associated Press Player of the Year, and he has continually credited his team for many of his accomplishments, including this one and the Heisman.
"He's a guy that understands individual success comes with team success, understands what the wide receivers and the offensive line and defensively, all those guys how they've played a major part in that, and we just couldn't be happier for him and his family," Heupel said.
Despite all the awards, however, there is still one that he seeks.
"Playing in the national championship is something that we've talked about all three years that I've been here, and we've yet to do that," Bradford said. "So, to have that opportunity to play for a national championship this year, it's really exciting, and I think me and my teammates are really ready to get down there."