BEIJING - World No. 1 Serena Williams denied that there is a widening gulf between her and the other leading players after she claimed her 10th title of the year at the China Open on Sunday.
The power-hitting American has had another season of domination, being confirmed as the top-ranked year-end player last month, when she also became the first woman to win more than US$9 million (S$11 million) in a season.
The top seed eased to her second title in Beijing with a convincing 6-2, 6-2 demolition of Serbia's Jelena Jankovic.
But the 32-year-old said she was still being challenged by other top-ranked female players.
"Everyone is beatable, I think, at some point. I know I am," she said.
"Everyone is a threat, you know. I don't feel like I'm above anyone. I'm just playing and doing the best I can. That's all I can do. I'm just happy that I'm working hard to be the best right now. Soon, it will be someone else."
Williams has a career total of 56 titles, with 17 major wins.
She became only the fifth woman to hold all four Grand Slam titles simultaneously at the 2003 Australian Open and, in 2002 and 2009, had finished the year at No. 1.