Venus Williams has called time on her 2013 season as she continues to battle the autoimmune disorder Sjogren's syndrome.
It's been a tough season for Williams who lost in the first round of the French Open before being forced to miss Wimbledon through injury. She's spent the past few years battling Sjogren's, a debilitating disorder which makes it very difficult for her to train.
However this autumn she's enjoyed a resurgence in form. She stunned Kirsten Flipkens at the US Open before enjoying a stunning run to the last four of the WTA Premier tournament in Tokyo, beating Victoria Azarenka and Simona Halep, before losing to Petra Kvitova in the last four.
There was a potential all-Williams clash on the cards at the China Open last week but Venus was unable to repeat her heroics from the Japanese capital, losing 6-1, 6-2 to Sabine Lisicki in the first round in Beijing.
Williams had been considering competing in Luxembourg next week to defend her title but instead she's decided to call an early end to her season. She will return to the tour at the start of 2014, possibly at the Australian Open but with her current ranking of No.38, it seems very unlikely that she will be seeded in Melbourne.
Meanwhile her sister Serena insists she's beatable despite boasting a remarkable 74-5 win-loss record on the tour this year. She's won ten titles but denied being invincible.
"Everyone was beatable at some point and I know that everyone is a threat," she said. "I do not feel I'm above anyone but it is just that I'm playing and doing the best I can."
"I'm happy (that) I'm working hard to be the best right now but soon it will be someone else."