He had 87 tackles and six sacks as a senior for the 10-2 Wolves.
“I believe if I work hard at whatever I do, I can be a really productive player there,” Onuoha said. “They have a great defensive scheme that fits me perfect.”
Onuoha is the third in-state commit for the Sooners, joining Heritage Hall wide receiver Sterling Shepard and Jenks running back Alex Ross.
Onuoha said he'd settled on his decision sometime Tuesday.
“I'm happy to get it off my shoulders and finally make my decision,” Onuoha said. “It feels like I'm starting a whole new life. For the past month, I've been going back and forth and tossing my mind around about where I should go.”