World number two, Serena Williams has withdrawn from the season-ending WTA Finals in Singapore because of a shoulder injury.
The 35-year-old American has not played since reaching the semi-finals of the US Open in September, missing the entire Asian swing because of the same problem.
“I was looking forward to competing in Singapore this year and playing against the best players in the world,” said Williams.
“However, I have received disappointing news from my doctor that I must undergo a series of medical treatments for my shoulder, and will be off the court for the next several weeks.
“I will miss coming to Singapore for the year-end Finals and playing in front of my fans but truly hope to be back soon.”
Williams’ withdrawal means the ninth-ranked player on the Road to Singapore Leaderboard will qualify for the Finals, with Britain’s Johanna Konta currently occupying the spot, but Spaniard, Carla Suarez Navarro and Russia’s Svetlana Kuznetsova still have a chance of sneaking into the final qualifying position.