World No. 3 Caroline Wozniacki said she hopes to become an inspiration for fellow sufferers of rheumatoid arthritis as her shock diagnosis drew support and sympathy yesterday.

The Dane revealed she was suffering from the condition after crashing out of the WTA Finals against Elina Svitolina late on Thursday, ending her title defence. Wozniacki was diagnosed with the autoimmune disease, which causes swelling of the joints and fatigue, before the US Open. She said she felt unwell after Wimbledon, before waking up during the Rogers Cup in August unable to lift her arms. "I thought it was just the flu. After the US Open, I went to see one of the best doctors there is and started treatment. In the beginning, it was a shock.