Former Los Angeles Laker Rick Fox has filed for divorce from singer-actress Vanessa Williams.

The couple have been married for five years and have a 4-year-old daughter, Sasha, Fox's spokeswoman, Staci Wolfe, said.

"They are both extremely devoted parents, so the most important thing to them right now is the welfare of their child," Wolfe said. "They are committed to working out what's best for her."

Wolfe declined further comment.

Fox, who played with the Lakers for seven years, was traded last week to the Boston Celtics.

Williams' publicist, Brad Cafarelli, declined comment.

Williams has three children from her first marriage, and Fox has a son from a previous relationship. The two had been separated.