Andrew Fitzgerald, a 6-foot-9, 245-pound center from Wolfeboro (N.H.) Brewster Academy, ended his recruitment on Sunday night.
The Baltimore, Md., native visited Oklahoma over the weekend and decided to join the program before making it back to New England, according to his high school coach Jason Smith.
"Just getting in there on my visit, I felt very welcome at Oklahoma," Fitzgerald said. "I felt very comfortable with the players and coaching staff. I think I just fit with their style of play really."
Fitzgerald said he also considered Kentucky, Minnesota, Xavier and Marquette.
Fitzgerald joins Kyle Hardrick, Tommy Mason-Griffin and Steven Pledger in the 2009 recruiting class for the Sooners. Fitzgerald said he is hoping for more.
"I saw that for a while. I had a chance to watch Blake last year and how everything went to him and how he was dominant in the Big 12. Since he is leaving after this year, I guess they are trying to keep the program up. They said they need me and big [Keith "Tiny" Gallon] from Oak Hill to keep it up. Since I verbally committed, we are just waiting on Tiny to commit now," Fitzgerald said.
The four-star center said he felt at ease the minute he arrived in Norman.
"I had my mind set that I wanted to commit to Oklahoma [before the visit] but I had to see how I would fit there and how comfortable I'd be there," Fitzgerald said. "I felt like I was back at home there because the whole coaching staff are all cool guys. They are funny. I just felt comfortable with them all and they are just chill guys to hang out with it. It's a good fit for me."