Sania Mirza of India (C) attempts to present a ball to fans next to her partner Cara Black (R) of Zimbabwe as they celebrate their win over Garbine Muguruza and Carla Suarez Navarro of Spain after their Pan Pacific Open women's doubles final tennis match in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (top) of Zimbabwe and her partner Sania Mirza of India celebrate their win over Garbine Muguruza and Carla Suarez Navarro of Spain (not in picture) in their Pan Pacific Open women's doubles final tennis match in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Garbine Muguruza (bottom) of Spain returns a shot in front of her partner Carla Suarez Navarro of Spain during their Pan Pacific Open women's doubles final tennis match against Cara Black of Zimbabwe and Sania Mirza of India in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (top) of Zimbabwe serves as her partner Sania Mirza of India squats during their Pan Pacific Open women's doubles final tennis match against Garbine Muguruza and Carla Suarez Navarro of Spain in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (L) of Zimbabwe attempts to returns a shot next to her partner Sania Mirza of India during their Pan Pacific Open women's doubles final tennis match against Garbine Muguruza and Carla Suarez Navarro of Spain in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (R) of Zimbabwe and Sania Mirza (2nd R) of India hold their trophy, a traditional Japanese battledore, as they speak with runners up Garbine Muguruza (L) and Carla Suarez Navarro of Spain during a photo session after their Pan Pacific Open women's doubles final tennis match in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (R) of Zimbabwe and Sania Mirza of India hold their trophy, a traditional Japanese battledore, as they pose for photographs after defeating Garbine Muguruza and Carla Suarez Navarro of Spain in their Pan Pacific Open women's doubles final tennis match in Tokyo September 20, 2014. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black of Zimbabwe (R) and Sania Mirza of India celebrate after defeating Martina Hingis of Switzerland and Belinda Bencic of Switzerland during their Pan Pacific Open women's doubles tennis match in Tokyo September 18, 2014. REUTERS/Toru Hanai (JAPAN - Tags: SPORT TENNIS)

Martina Hingis (L) of Switzerland and her partner and compatriot Belinda Bencic react after losing a point during their Pan Pacific Open women's doubles tennis match against Cara Black of Zimbabwe and Sania Mirza of India in Tokyo September 18, 2014. REUTERS/Toru Hanai (JAPAN - Tags: SPORT TENNIS)

Belinda Bencic of Switzerland (L) returns a shot next to her partner and compatriot Martina Hingis during their Pan Pacific Open women's doubles tennis match against Cara Black of Zimbabwe and Sania Mirza of India in Tokyo September 18, 2014. REUTERS/Toru Hanai (JAPAN - Tags: SPORT TENNIS)

Martina Hingis of Switzerland (R) returns a shot next to her partner and compatriot Belinda Bencic during their Pan Pacific Open women's doubles tennis match against Cara Black of Zimbabwe and Sania Mirza of India in Tokyo September 18, 2014. REUTERS/Toru Hanai (JAPAN - Tags: SPORT TENNIS)

Mar 28, 2014; Miami, FL, USA; Sania Mizra hits a volley next to partner Cara Black against Martina Hingis and Sabine Lisicki (both not pictured) during a women's doubles semi final at the Sony Open at Crandon Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Mar 28, 2014; Miami, FL, USA; Sabine Lisicki (L) and Martina Hingis (R) celebrate after their match against Cara Black and Sania Mizra (both not pictured) during a women's doubles semi final at the Sony Open at Crandon Tennis Center. Hingis and Lisicki won 6-3, 6-4. Mandatory Credit: Geoff Burke-USA TODAY Sports

Mar 28, 2014; Miami, FL, USA; Sania Mizra hits a forehand next to partner Cara Black (not pictured) against Martina Hingis and Sabine Lisicki (both not pictured) during a women's doubles semi final at the Sony Open at Crandon Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Mar 28, 2014; Miami, FL, USA; Martina Hingis hits a forehand next to partner Sabine Lisicki against Cara Black and Sania Mizra (both not pictured) during a women's doubles semi final at the Sony Open at Crandon Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Mar 28, 2014; Miami, FL, USA; Martina Hingis hits a forehand next to partner Sabine Lisicki (not pictured) against Cara Black and Sania Mizra (both not pictured) during a women's doubles semi final at the Sony Open at Crandon Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Mar 15, 2014; Indian Wells, CA, USA; Shuai Peng (CHN), right, and Su-Wei Hsieh (TPE) react after their doubles final match against Cara Black (ZIM) and Sania Mirza (IND) at the BNP Paribas Open at Indian Wells Tennis Garden. Hsieh/Peng won 7-6, 6-2. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports

Mar 15, 2014; Indian Wells, CA, USA; Shuai Peng (CHN), in orange and Su-Wei Hsieh (TPE), in black, shake hands with Cara Black (ZIM) and Sania Mirza (IND) after their doubles final match at the BNP Paribas Open at Indian Wells Tennis Garden. Hsieh/Peng won 7-6, 6-2. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports

Mar 15, 2014; Indian Wells, CA, USA; Shuai Peng (CHN), right, and Su-Wei Hsieh (TPE) during their doubles final match against Cara Black (ZIM) and Sania Mirza (IND) at the BNP Paribas Open at Indian Wells Tennis Garden. Hsieh/Peng won 7-6, 6-2. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports

Mar 15, 2014; Indian Wells, CA, USA; Shuai Peng (CHN), left, and Su-Wei Hsieh (TPE) during their doubles final match against Cara Black (ZIM) and Sania Mirza (IND) at the BNP Paribas Open at Indian Wells Tennis Garden. Hsieh/Peng won 7-6, 6-2. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports

Mar 15, 2014; Indian Wells, CA, USA; Shuai Peng (CHN), right, and Su-Wei Hsieh (TPE) pose with the championship trophy after their doubles final match against Cara Black (ZIM) and Sania Mirza (IND) at the BNP Paribas Open at Indian Wells Tennis Garden. Hsieh/Peng won 7-6, 6-2. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports

Artist Stella Vine poses looking at her painting "Cara Black Lace Dress" at her exhibition 'Melting Into you' at Cecil Sharp House in London December 14, 2013. The exhibition, Vine's first in London in eight years, comprises entirely new works of celebrity portraits. REUTERS/Neil Hall (BRITAIN - Tags: SOCIETY)

Liezel Huber of the U.S. returns a shot as Taiwan's Chan Hao-ching (top) looks on during their women's doubles final match against Sania Mirza of India and Cara Black of Zimbabwe at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Sania Mirza (L) of India returns a shot as Cara Black of Zimbabwe looks on during their women's doubles final match against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Sania Mirza of India (top) returns a shot as Cara Black of Zimbabwe squats during their women's doubles final match against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (R) of Zimbabwe holding her son Lachlan and Sania Mirza (L) of India holding their victory trophy, which is a traditional Japanese battledore, pose for photographs after defeating Taiwan's Chan Hao-ching and Liezel Huber of the U.S. during their women's doubles final match at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black of Zimbabwe holds her son Lachlan after winning her doubles final match with Sania Mirza of India against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

Cara Black (L) of Zimbabwe and Sania Mirza of India react after winning match point against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. during their women's doubles final match at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. REUTERS/Yuya Shino (JAPAN - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black of Zimbabwe celebrate after defeating Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010.
REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black (2nd R) of Zimbabwe greet Jaroslav Levinsky (L) of the Czech Republic and Russia's Ekaterina Makarova (2nd L) after winning their mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

Cara Black of Zimbabwe and India's Leander Paes pose with the winner's trophy after defeating Russia's Ekaterina Makarova and Jaroslav Levinsky of the Czech Republic in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

Cara Black of Zimbabwe returns a shot as partner Leander Paes of India waits during during their mixed doubles final against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (L) and Cara Black of Zimbabwe react during their mixed doubles final against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (L) and Cara Black of Zimbabwe high-five each other during their mixed doubles final against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black of Zimbabwe hold the champion's trophy after defeating Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (L) and Cara Black of Zimbabwe whisper to each other during their mixed doubles final against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black of Zimbabwe celebrate after defeating Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010.
REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes and Cara Black of Zimbabwe hold the champion's trophy after defeating Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black of Zimbabwe celebrate winning against the mixed doubles final against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarovaat the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Quinn Rooney/Pool (AUSTRALIA - Tags: SPORT TENNIS)

Cara Black of Zimbabwe and India's Leander Paes pose with the winner's trophy after defeating Russia's Ekaterina Makarova and Jaroslav Levinsky of the Czech Republic in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

REFILE - CORRECTING IDs
India's Leander Paes and Cara Black of Zimbabwe embrace after defeating Russia's Ekaterina Makarova and Jaroslav Levinsky of the Czech Republic in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (L) and Cara Black of Zimbabwe celebrate winning a point against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Quinn Rooney/Pool (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes (R) and Cara Black of Zimbabwe celebrate winning a point against Jaroslav Levinsky of the Czech Republic and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Quinn Rooney/Pool (AUSTRALIA - Tags: SPORT TENNIS)

India's Leander Paes and Jaroslav Levinsky of the Czech Republic embrace after defeating Cara Black of Zimbabwe and Russia's Ekaterina Makarova in the mixed doubles final at the Australian Open tennis tournament in Melbourne January 31, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

Venus (R) and Serena Williams of the U.S. high-five during their women's doubles final against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

Cara Black (R) of Zimbabwe and Liezel Huber of the U.S. play against Venus and Serena Williams of the U.S. in the women's doubles final at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Daniel Munoz (AUSTRALIA - Tags: SPORT TENNIS)

Venus (L) and Serena Williams of the U.S. hold their winners' trophy after beating Cara Black of Zimbabwe and Liezel Huber of the U.S. in the women's doubles final at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Mick Tsikas (AUSTRALIA - Tags: SPORT TENNIS IMAGES OF THE DAY)

Venus (L) and Serena Williams of the U.S. celebrate beating Cara Black of Zimbabwe and Liezel Huber of the U.S. in the women's doubles final at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

Venus (R) and Serena Williams of the U.S. hold their winner's trophy after beating Cara Black of Zimbabwe and Liezel Huber of the U.S. in the women's doubles final at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Vivek Prakash (AUSTRALIA - Tags: SPORT TENNIS)

A bird flies above Venus (top) and Serena Williams of the U.S. during their women's doubles final against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Mick Tsikas (AUSTRALIA - Tags: SPORT TENNIS)

Venus (L) and Serena Williams of the U.S. play in the women's doubles final against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Mick Tsikas (AUSTRALIA - Tags: SPORT TENNIS IMAGES OF THE DAY)

Venus (L) and Serena Williams of the U.S. play in the women's doubles final against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the Australian Open tennis tournament in Melbourne January 29, 2010. REUTERS/Mick Tsikas (AUSTRALIA - Tags: SPORT TENNIS)

Serena (R) and Venus Williams of the U.S. are reflected in the women's doubles championship trophy after winning over Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/David Gray (UNITED STATES SPORT TENNIS)

Serena (L) and Venus Williams of the U.S. hold the women's doubles championship trophy after beating Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Shaun Best (UNITED STATES SPORT TENNIS)

Serena (L) and Venus Williams of the U.S. hold the women's doubles championship trophy after beating Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Eduardo Munoz (UNITED STATES SPORT TENNIS IMAGES OF THE DAY)

Serena (R) and Venus Williams of the U.S. celebrate winning the women's doubles championship over Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Kevin Lamarque (UNITED STATES SPORT TENNIS)

Serena (R) and Venus Williams of the U.S. celebrate winning the women's doubles championship over Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Kevin Lamarque (UNITED STATES SPORT TENNIS)

Serena (R) and Venus Williams of the U.S. celebrate winning the women's doubles championship over Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Kevin Lamarque (UNITED STATES SPORT TENNIS)

Serena Williams of the U.S. reacts to a shot during the women's doubles final match with her sister Venus against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Shaun Best (UNITED STATES SPORT TENNIS)

Serena Williams (R) and her sister Venus of the U.S. confer during the women's doubles final match against Cara Black of Zimbabwe and Liezel Huber of the U.S. at the U.S. Open tennis tournament in New York September 14, 2009. REUTERS/Kevin Lamarque (UNITED STATES SPORT TENNIS)