San Jose, Calif. ? Oklahoma basketball coach Kelvin Sampson’s 72-year-old father had emergency brain surgery after falling ill during the Sooners’ practice Tuesday.

John W. Sampson, known as Ned, had surgery for a subdural hematoma, or blood collecting on the brain, about midnight, Oklahoma team physician Brock Schnebel said Wednesday.

“My father, growing up, he was a high school basketball coach …” Kelvin Sampson said before breaking down in tears.

“I’m sorry,” he said, covering his eyes with his hand.

Several moments passed before he continued.

“Your experiences shape who you are. He’s a worker. He was tough. The adversity that you were raised in shapes you as you get older,” he said, his eyes red with tears. “I’ve always appreciated that.”

Sampson was not specific about his father’s condition.

“I was with him obviously all night and this morning,” Sampson said as the second-seeded Sooners prepared to face third-seeded Arizona tonight in the NCAA West Regional at the Compac Center.

Ned Sampson launched his son’s career, coaching him at Pembroke High School in North Carolina. The younger Sampson has taken Oklahoma to the NCAA Tournament every season since he became head coach eight years ago. He was named Coach of the Year in 1995.

The surgical procedure to drain blood from his brain took about an hour, Schnebel said.

A full recovery was expected, Schnebel said.