Chicago Chicago Bulls guard Jay Williams broke his leg in a motorcycle accident Thursday evening.
"He's OK, but to the extent of the leg injury, we don't want to speculate," Bulls spokesman Tim Hallam said.
But Williams' father, David, said his son was expected to be in surgery for three or four hours.
Jay Williams was at the Advocate Illinois Masonic Medical Center in Chicago. A hospital spokeswoman referred all inquiries on Williams to Bulls officials.
Team spokesman Brandon Faber said Jay Williams recently bought the motorcycle. The accident happened in Chicago's Lakeview neighborhood.
The Bulls got the first-round draft pick from Duke last year. The 21-year-old player averaged 9.5 points last season.
Williams was a second-team All-NBA rookie. He ranked eighth in the league in triple-doubles and 12th in assists and turnovers.
Williams had a career-high 26 points and 14 rebounds against the New Jersey Nets Nov. 11.