Stanislas Wawrinka won the third set, 7-5, and is one set away from advancing to the quarterfinals of the U.S. Open.

Sam Querrey was up 3-1 in the third set and seemed to have momentum on his side.

Wawrinka won the first set 7-6, then Querrey rallied to win the second set, also 7-6.

What does Querrey have left? Can he tie it up again? Can the veteran Wawrinka break the will of Querrey? We'll see.

Querrey's first appearance in the quarterfinals of a Grand Slam event is at stake. The same goes for Wawrinka, who has never advanced past the fourth round of a Grand Slam event.

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