US Open women's final - Williams vs. Azarenka

If there's a player out there who could possibly test No. 1-seeded Serena Williams in the U.S. Open final, it's her opponent Sunday, No. 2 Victoria Azarenka.




Williams, it's worth noting, has lost only four of 70 matches this season, and two of those defeats came against Azarenka, including just last month at a hard-court tuneup.




There's one significant switch in circumstances: Those were at smaller tournaments. This time, there's a major championship on the line, and Williams is at her best when the stakes are the biggest.

Associated Press

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Serena Williams of the U.S. reacts to the wind while playing Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York

Serena Williams of the U.S. reacts to the wind while playing Victoria Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013. REUTERS/Adam Hunger (UNITED STATES - Tags: SPORT TENNIS)

Serena Williams of the U.S. serves to Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York

Serena Williams of the U.S. serves to Victoria Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT TENNIS)

Azarenka of Belarus celebrates a point against Serena Williams of the U.S. during their women's singles final match at the U.S. Open tennis championships in New York

Victoria Azarenka of Belarus celebrates a point against Serena Williams of the U.S. during their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013. REUTERS/Eduardo Munoz (UNITED STATES - Tags: SPORT TENNIS)

Serena Williams of the U.S. and Azarenka of Belarus pose ahead of their women's singles final match at the U.S. Open tennis championships in New York

Serena Williams of the U.S. (R) and Victoria Azarenka of Belarus pose ahead of their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013. REUTERS/Adam Hunger (UNITED STATES - Tags: SPORT TENNIS)

Serena Williams hits a return to Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York

Serena Williams hits a return to Victoria Azarenka of Belarus during their women's singles final match at the U.S. Open tennis championships in New York September 8, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT TENNIS)