Serena Williams withdraws from Madrid Open

Serena Williams withdraws from Madrid Open
In a photo provided by HBO date not provided, Serena Williams holds her daughter, Alexis Olympia Ohanion Jr., in a scene from the HBO's "Being Serena," a five-part documentary series. The series airs Wednesday nights, starting this week. (HBO via AP)

MADRID (AP) — Serena Williams has withdrawn from next week’s Madrid Open, saying she wasn’t ready to compete.

Tournament organizers say Williams withdrew because she needs more time to train before returning to action.

Williams, a 23-time Grand Slam champion, returned to the tour in Indian Wells this year after a 14-month absence because of the birth of her daughter.

She won in Madrid in 2012 and 2013.

Williams’s replacement in Madrid will be Coco Vandeweghe.