"He committed," Hornbeak's high school coach Ray Forsette told Scout.com. "He said he liked it and had a good time."
The Arlington (Tex.) Grace Prep coach said he enjoyed coaching Hornbeak because of his toughness.
"He's a tough kid," Forsette said. "He's a grinder. He's going to get in there and guard you. He can do it all. He can shoot it. He's a true combo guard any coach would love to have."
Hornbeak, who also considered South Florida, Houston and Colorado, joins Buddy Heild to make up the Sooners current 2012 recruiting class.