Oregon State spokesman Shawn Schoeffler says Baker is hospitalized at Good Samaritan Regional Medical Center in Corvallis and is in critical but stable condition.
Baker was working out with teammates on Tuesday during drills when he collapsed. Trainers provided CPR on Baker and used an automated external defibrillator on him.
The school said it would provide additional information on Baker as it becomes available.
“Thankfully we had staff respond who were able to assist him in an immediate and effective way," Steve Clark, vice president for university relations and marketing said to Oregonlive.com. "EMTs were able to arrive in a very responsive way."
Baker is a 6-foot-3, 180-pound shooting guard from Malone, Fla. Last season, he led his high school to a state title by scoring 44 points in the championship game.
- Scooby Axson