Injury woe for Serena
Serena Williams has pulled out of the Madrid Open due to injury.
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Williams had been due to take on Petra Kvitova in the quarter-finals in Madrid on Friday but shortly before the scheduled start of play it was announced that the American had pulled out citing a left thigh injury.
At the time, tournament organisers in Madrid also said she had pulled of next week's event in Rome but the player later said she still hoped to play in the Italian captial.
“I have a left thigh injury and, unfortunately, have to withdraw from this year’s Mutua Madrid Open," she said in a statement. "It happened during my first round match. It started to get better, but most importantly right now, I just need some time to rest and recover.
"It’s beyond words. It’s so frustrating.
Williams' thigh was heavily strapped during Thursday's win over Carla Suarez Navarro - the 650th of her career. She struggled on serve but still lost only five games.
Kvitova receives a walkover into the last four where she will meet either Simona Halep or Ana Ivanovic.
Williams will be keen to prove her fitness ahead of the defence of her French Open title which begins on May 25.