Victoria Azarenka

Novak Djokovic celebrates his victory over Andy Murray during their US Open men's quarterfinals match at the USTA Billie Jean King National Center September 3, 2014. (Photo by Don Emmert/AFP/Getty Images)

Djokovic To Face Nishikori In US Open Semis; Murray Drained, ‘Disappointed’

Eventually, the physically demanding action proved too much for a fading Andy Murray, and Novak Djokovic pulled away to reach the semifinals for the eighth consecutive year.

09/04/2014

(Left): Serena Williams of the United States reacts against Flavia Pennetta of Italy during their women's singles quarterfinal match on Day Ten of the 2014 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2014. (Photo by Chris Trotman/Getty Images for USTA)

(Right): Novak Djokovic of Serbia serves against Andy Murray of Great Britain during their men's singles quarterfinal match on Day Ten of the 2014 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2014. (Photo by Julian Finney/Getty Images)

Serena Williams, Novak Djokovic Off To US Open Semifinals

After a bad-as-can-be start, dropping the first three games, Serena Williams quickly turned things around and stretched her U.S. Open winning streak to 19 matches to get back to the semifinals.

09/03/2014

Kei Nishikori of Japan returns a shot against Stan Wawrinka of Switzerland during the US Open quarterfinals on Sept. 3, 2014. (Photo by Elsa/Getty Images)

Japan’s Nishikori Outlasts No. 3 Wawrinka For Spot In US Open Semifinals

The match went 4 hours, 15 minutes, and the 10th-seeded Nishikori managed to shake off any lingering exhaustion from his previous victory, which lasted 4:19 and ended at 2:26 a.m. Tuesday, equaling the latest finish in tournament history.

09/03/2014

Novak Djokovic (Photo by Matthew Stockman/Getty Images) and Serena Williams (Photo by Chris Trotman/Getty Images for USTA) in action at the 2014 US Open.

Murray-Djokovic, Serena-Pennetta Highlight Busy Wednesday At US Open

Andy Murray went more than a year between victories over top-10 opponents. Now he needs to make it two in a row.

09/03/2014

Serena Williams returns a shot against Vania King during their second-round match at the US Open on Aug. 28, 2014. (Photo by Elsa/Getty Images)

Former French Open Winner Ana Ivanovic Bounced Out Of US Open

Ivanovic, who had been having her best season since winning the French Open in 2008, lost to Karolina Pliskova 7-5, 6-4 in the second round Thursday.

08/28/2014

Serena Williams (Photo by Jonathan Moore/Getty Images)

Serena Williams Seeded No. 1 At US Open; Simona Halep 2nd

Top-ranked Serena Williams is seeded No. 1 as she seeks her third straight U.S. Open title.

08/20/2014

Serena Williams holds the trophy as she celebrates her win over Victoria Azarenka of Belarus during their 2013 US Open women's singles final at the USTA Billie Jean King National Tennis Center September 8, 2013 in Flushing Meadows. (Photo by Stan Honda/AFP/Getty Images)

Liguori: There’s No Stopping Serena Williams With Emotions In Check

Dealing with adversity in intense matches is where Serena Williams has shown the biggest improvement. As her sister Venus said, “the only player that can beat Serena is Serena herself.”

09/09/2013

Serena Williams of the United States of America celebrates a point during her women's singles final match against Victoria Azarenka (Photo by Al Bello/Getty Images)

Serena Williams Defeats Azarenka, Repeats As US Open Champion

American Serena Williams captured her second straight US Open title over Victoria Azarenka in a repeat of last year’s final.

09/08/2013

Rafael Nadal of Spain celebrates winning his men's singles semifinal match against Richard Gasquet of France on Day Thirteen of the 2013 US Open. (Photo by Matthew Stockman/Getty Images)

Nadal To Face No. 1 Seed Djokovic In US Open Final

Rafael Nadal is in the US Open final after victory Saturday over Richard Gasquet.

09/07/2013

Victoria Azarenka of Belarus plays against Flavia Pennetta of Italy during their US Open women's singles semifinal match at the USTA Billie Jean King National Tennis Center in New York on Sept. 6, 2013. (Photo: TIMOTHY CLARY/AFP/Getty Images)

Azarenka Wins Ugly, Gets Dominant Serena In US Open Final Rematch

Six times, Serena Williams was a single point from winning on Friday. Six times, she failed to come through. All that did, of course, was delay the inevitable.

09/06/2013

Flavia Pennetta of Italy embraces Roberta Vinci at the net after their women's singles quarterfinal match on Day 10 of the US Open at USTA Billie Jean King National Tennis Center on September 4, 2013. (Photo by Elsa/Getty Images)

Azarenka And Nadal Turn Their Games Up, Earn Spots In US Open Semis

Flavia Pennetta made her first Grand Slam semifinal, defeating 10th-seeded Roberta Vinci 6-4, 6-1 on Wednesday in an all-Italian quarterfinal at the US Open.

09/04/2013

Victoria Azarenka of Belarus shakes hands at the net with Ana Ivanovic of Serbia after their women's singles fourth-round match on Day 9 of the 2013 US Open. (Photo by Elsa/Getty Images)

Azarenka Rallies From A Set Down To Top Ivanovic In 4th Round Of US Open

No. 2 Victoria Azarenka rallied from a set down for the second straight match, beating Ana Ivanovic to return to the US Open quarterfinals.

09/03/2013

Roberta Vinci of Italy celebrates her 6-4, 6-2 win over Camila Giorgi of Italy during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center September 2, 2013 in New York. (Photo credit: Stan Honda/AFP/Getty Images)

Vinci Reaches US Open Quarterfinals After Beating Giorgi

Roberta Vinci has reached the US Open quarterfinals for the second straight year, beating fellow Italian Camila Giorgi.

09/02/2013

Victoria Azarenka of Belarus celebrates victory during her women's singles third round match against Alize Cornet of France on Day Six of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 31, 2013 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)

Azarenka Shouts At Umpire, Defeats Cornet In Three Sets

After the match, Victoria Azarenka said of the call: “That was the most ridiculous thing there is.”

08/31/2013

Serena Williams (Photo credit should read TIMOTHY CLARY/AFP/Getty Images)

Serena, Nadal Cruise, 17-Year-Old Duval Falls On Day 4 Of US Open

Only a few spots separate them in the seedings. Still, the considerable gulf between No. 1 Serena Williams and No. 4 Sara Errani was hard to ignore in their matches Thursday at the U.S. Open.

08/29/2013

more