2015 BNP Paribas Open at Indian Wells

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Serena Williams reacts after winning a crucial point during the second set of a quarterfinal match against Timea Bacsinszky on Stadium 1.

Jelena Jankovic lays on the court after stretching for a forehand during the 2015 BNP Paribas Open Women’s Singles Final in Indian Wells, California on Sunday, March 22, 2015.

Novak Djokovic reacts after winning the 2015 BNP Paribas Open Men’s Singles Final.

The crowd does the wave atop Stadium 1 during the 2015 BNP Paribas Open Women’s Singles Final between Simona Halep and Jelena Jankovic in Indian Wells, California on Sunday, March 22, 2015.

Nicole Gibbs serves to Monica Puig during a first round match of the 2015 BNP Paribas Open at the Indian Wells Tennis Garden in Indian Wells, California Wednesday, March 11, 2015.

The crowd watchs the 2015 BNP Paribas Open Men’s Singles Final between Novak Djokovic and Roger Federer at Stadium 1 in Indian Wells, California on Sunday, March 22, 2015.

Caroline Wozniacki gracefully hits a backhanded volley against Ons Jabeur in a second round match on Stadium 3 at the Indian Wells Tennis Garden.

Jack Sock reacts after defeating Roberto Bautista Agut in a third round match on Stadium 2 at the Indian Wells Tennis Garden in Indian Wells, California on Tuesday, March 17, 2015.

Flavia Panetta hits a forehand during a quarterfinal match between against Sabine Lisicki on Stadium 1 at the 2015 BNP Paribas Open.

Brit Heather Watson lines up a forehanded shot with the sun at her back against Carla Suarez Navarro on Stadium 2 at the Indian Wells Tennis Garden in Indian Wells, California on Tuesday, March 17, 2015.

Roger Federer waits lines up a backhand against Tomas Berdych in a quarterfinal match on Stadium 1 at the 2015 BNP Paribas Open in Indian Wells, California on Friday, March 20, 2015.

The tennis ball speeds towards an awaiting Jelena Jankovic during a match against Sabine Lisicki on Stadium 1 at the 2015 BNP Paribas Open in Indian Wells, California on Friday, March 20, 2015.

Rafael Nadal serves to Milos Raonic in a quarterfinal match on Stadium 1 at the 2015 BNP Paribas Open in Indian Wells, California on Friday, March 20, 2015.

Jack Sock and Vasek Pospisil attempt to hit the ball against Marcin Matkowski and Nenad Zimonjic.

Feliciano Lopez lines up a backhand shot against Kei Nishikoir on Stadium 1 at the Indian Wells Tennis Garden in Indian Wells, California on Wednesday, March 18, 2015.

Madison Keys lays on the ground after committing an unforced error against Jelena Jankovic during their match.

Roger Federer reaches for the ball during the semifinal match against Milos Raonic on Stadium 1 at the 2015 BNP Paribas Open in Indian Wells, California on Saturday, March 21, 2015.

Bernard Tomic screams after defeating Thanasi Kokkinakis during an intense, three set match in the fourth round match on Stadium 2 during the 2015 BNP Paribas Open in Indian Wells, California on Wednesday, March 18, 2015.

Rafael Nadal signs autographs during the 2015 BNP Paribas Open in Indian Wells, California on Thursday, March 19, 2015.

Gilles Muller serves to Jack Sock in a second round match on Stadium 3 at the Indian Wells Tennis Garden in Indian Wells, California on Sunday, March 15, 2015.

A crowd gathers to watch Rafael Nadal practice at the Indian Wells Tennis Garden in Indian Wells, California on Saturday, March 14, 2015.

Frenchman Gilles Simon follows a looping Rafael Nadal shot towards the baseline during a fourth round match at the BNP Paribas Open.

Milos Raonic lines up a backhanded shot against Alexandr Dogopolov in a third round match on Stadium 3 at the Indian Wells Tennis Garden in Indian Wells, California on Tuesday, March 17, 2015.

The practice courts at the Indian Wells Tennis Garden were constantly full of activity.

Fans stand on the stairs for a better view of a quarterfinal match between Rafael Nadal plays Milos Raonic at the 2015 BNP Paribas Open in Indian Wells, California on Friday, March 20, 2015.

Juan Monaco runs forward to hit a drop shot against Marin Cilic in a second round match on Stadium 2 at the Indian Wells Tennis Garden in Indian Wells, California on Saturday, March 14, 2015.

Sabine Lisicki reacts after defeating Flavia Pennetta in a quarterfinal match of the 2015 BNP Paribas Open in Indian Wells, California.

Jelena Jankovic smiles after accepting the runner-up trophy after the 2015 BNP Paribas Open Women’s Singles Final in Indian Wells, California on Sunday, March 22, 2015.

Runner-up Roger Federer bites his lip while listening to Novak Djokovic's victory speech during the 2015 BNP Paribas Open Men’s Singles Final trophy presentation.