Despite holding a 2-9 record against Serena Williams, Maria Sharapova believes she can upset the American in the WTA Championships final on Sunday. Sharapova has not defeated Serena since the 2004 WTA Championships final.

“I’ve done it before,” Sharapova said. “I know against her it’s been a really long time, but there are many players that I’ve faced against, especially coming up where there were things that just weren’t working at that time. Justine [Henin] was a really good example. I always had difficulties against her and never quite recovered well in the rallies. She was moving me around with all the different shotmaking. But obviously against Serena there is a lot more power involved. She served extremely well against me in the last few matches that we played. Obviously you got to hold your own court as well.”