Florida Gators QB Tim Tebow started in a game against Kentucky Saturday night.

In the third quarter, Tebow was knocked down by Kentucky Wildcats defensive end Taylor Windham, hitting his head on a teammate’s knee on the way down. Tebow, who had been receiving pre-game fluids via IV due to a respiratory illness, lay motionless for a few minutes before being carted off the field and vomiting on the sidelines. He was hospitalized overnight due to a concussion.

Watch the video below: