US Open 2016

FLUSHING NY- SEPTEMBER 10: Angelique Kerber reacts after winning the finals in her match with Karolina Pliskova during the womens finals on Arthur Ash...

FLUSHING NY- SEPTEMBER 10: Angelique Kerber reacts after winning the finals in her match with Karolina Pliskova during the womens finals on Arthur Ash...

FLUSHING NY- SEPTEMBER 10: Angelique Kerber reacts after winning the finals in her match with Karolina Pliskova during the womens finals on Arthur Ash...

FLUSHING NY- SEPTEMBER 10: Angelique Kerber reacts after winning the finals in her match with Karolina Pliskova during the womens finals on Arthur Ash...

FLUSHING NY- SEPTEMBER 10: Angelique Kerber reacts after winning the finals in her match with Karolina Pliskova during the womens finals on Arthur Ash...

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: trener Angelique Kerber

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Angelique Kerber podczas treningu

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Jelena Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Boris Becker

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Novak Djokovic,

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

photo: Wojciech Kubik/East News 09.09.2016. Nowy Jork. Turniej tenisowy US Open 2016. n/z: Gael Monfils

Serena Williams returns a shot to Karolina Pliskova, of the Czech Republic, during the semifinals of the U.S. Open tennis tournament, Thursday, Sept....

Serena Williams returns a shot to Karolina Pliskova, of the Czech Republic, during the semifinals of the U.S. Open tennis tournament, Thursday, Sept....

Serena Williams reacts after a point against Karolina Pliskova, of the Czech Republic, during the semifinals of the U.S. Open tennis tournament, Thurs...

Karolina Pliskova, of the Czech Republic, reacts after breaking Serena Williams' serve during the semifinals of the U.S. Open tennis tournament, Thurs...

Serena Williams loses her balance on a shot to Karolina Pliskova, of the Czech Republic, during the semifinals of the U.S. Open tennis tournament, Thu...

Angelique Kerber, of Germany, returns a shot to Caroline Wozniacki, of Denmark, during the semifinals of the U.S. Open tennis tournament, Thursday, Se...

Caroline Wozniacki, of Denmark, returns a shot to Angelique Kerber, of Germany, during the semifinals of the U.S. Open tennis tournament, Thursday, Se...

Caroline Wozniacki, of Denmark, kicks the ball after hitting a shot into the net against Angelique Kerber, of Germany, during the semifinals of the U....

Angelique Kerber, of Germany, reacts after defeating Caroline Wozniacki, of Denmark, during the semifinals of the U.S. Open tennis tournament, Thursda...

Angelique Kerber, of Germany, reacts after defeating Caroline Wozniacki, of Denmark, during the semifinals of the U.S. Open tennis tournament, Thursda...

Novak Djokovic, of Serbia, reacts after a point to Gael Monfils, of France, during the semifinals of the U.S. Open tennis tournament, Friday, Sept. 9,...

Gael Monfils, of France, wipes sweat from his face between serves from Novak Djokovic, of Serbia, during the semifinals of the U.S. Open tennis tourna...

Novak Djokovic, of Serbia, reacts after winning a game against Gael Monfils, of France, during the semifinals of the U.S. Open tennis tournament, Frid...

Novak Djokovic, of Serbia, returns a shot to Gael Monfils, of France, during the semifinals of the U.S. Open tennis tournament, Friday, Sept. 9, 2016,...

Gael Monfils, of France, reacts after a point against Novak Djokovic, of Serbia, during the semifinals of the U.S. Open tennis tournament, Friday, Sep...

Gael Monfils, of France, reacts after a point against Novak Djokovic, of Serbia, during the semifinals of the U.S. Open tennis tournament, Friday, Sep...

Novak Djokovic, of Serbia, returns a shot to Gael Monfils, of France, during the semifinals of the U.S. Open tennis tournament, Friday, Sept. 9, 2016,...