"Just coach K and my relationship with him is definitely the best," Cook said when asked about picking Duke. "I felt the most comfortable with him and it's close to home, but not too close to home. I just felt the most comfortable there."
It's clear that coach Krzyzewski's relationship with Cook was one of the deciding factors. The two got to know each other prior to Duke recruiting him, so it was an easy relationship to cultivate.
"Since I started with USA Basketball we formed a relationship before they recruited me," he said. "Then they started recruiting me and we had that relationship formed. It wasn't that hard for me to really start liking Duke.
"I just started paying attention and talking to him once a month," Cook added. "He's a great guy. He's a better person than coach and he's the greatest coach there is. It was great talking to him and him wanting me."
Nolan Smith, who Cook calls his "big brother", also factored into his recruitment as well. Cook claims Smith didn't recruit him to Duke, but Cook saw his growth and development and that stood out to him.
" I want to be up there where he is someday," Cook said of Smith. "I just always got advice from him. I would ask him about coach K and he would always give me his honest opinion. I always asked him about practice and everything and he was always honest with me."
"He knew that he didn't just want to drive me to Duke because he went through the same thing with his father because everybody wanted him to go to Louisville. But he wanted to make his own decision, so did I."
Rated No. 20 overall and the No. 4 point guard in the 2011 class, Cook is a standout at the position because of his feel for the game, scoring ability and leadership.
Over the summer, Cook was selected and started for the U17 USA team that won the Gold Medal at the 2010 FIBA U17 World Championship. He averaged 7.5 points, 7.3 assists and 3 rebounds per outing in Germany.
"We are going to have a great group," Cook said of Duke's 2011 recruiting class. "I definitely wanted to go somewhere where we can win and the class we are going to bring in is terrific."
Cook and Rivers spent time together at the Elite 24 in August and again on their official visits in October. Rivers made a comment to him that stuck with Cook up until he made his final choice.
"What really won me over and was a big factor was that Austin [Rivers] told me he wanted me to be his point guard," Cook said. "Just hearing that from a player of that caliber really stood out to me. I just can't wait to get up there."