According to the team, coach Mike Gundy dismissed Hill based on the evidence and the severity of the allegations. The school added that investigations by the Stillwater Police and the school's Office of Student Conduct were underway, and would proceed independently.
Hill's dismissal applies to his place on the school's track team, as well.
Hill was arrested Thursday on a domestic violence complaint, the Stillwater, Okla., police department announced in a media release.
According to the release, Hill was booked on probable cause for domestic abuse by strangulation, a felony, for allegedly assaulting his girlfriend.
Police responded to an emergency room at a Stillwater hospital Thursday night to investigate a reported domestic assault and battery. The woman said she and Hill were arguing at Hill’s residence when the incident "escalated into a physical altercation."
She told police that Hill, 20, hit her in the face and stomach and choked her. She was treated and later released from the hospital. She told police she is pregnant with Hill's child.
Hill was named Big 12 special teams player of the week on Monday. He returned a punt 92 yards for a touchdown against Oklahoma last week to tie their game with less than a minute remaining. The Cowboys won the game 38-35 in overtime.
On Wednesday, Hill was named his conference's Offensive Newcomer of the Year by the league's coaches.
- Scooby Axson and Christopher Woody