NEW YORK (AP) -- 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 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 Grand Slam championship on the line, and Williams is at her best when the stakes are the biggest.
Williams will be playing in her third consecutive U.S. Open final, seventh overall, and the 21st major title match of her career. She is 16-4. Azarenka will be in her fourth major final.
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