Question: What sport does Rohan Bopanna and Cara Black have in common?

Context articles: 2012 If Stockholm Open – Doubles
2009 LA Tennis Open – Doubles
2012 Gerry Weber Open – Doubles
2013 BNP Paribas Masters – Doubles
2016 MercedesCup – Doubles
Rohan Bopanna
Cara Black
2014 Open 13 – Doubles
2012 Western &amp; Southern Open – Men's Doubles
2016 Dubai Tennis Championships – Men's Doubles

Rohan Bopanna and Aisam-ul-Haq Qureshi were the defending champions but Bopanna decided not to participate.
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Rohan Bopanna and Eric Butorac were the defending champions, but Bopanna did not participate that year.
<BR>Butorac partnered with Scott Lipsky, but lost in the first round to Denis Istomin and Leonardo Mayer.
<BR>Bob Bryan and Mike Bryan won in the final 6–4, 7–6 against Benjamin Becker and Frank Moser.
Rohan Bopanna and Aisam-ul-Haq Qureshi were the defending champions but Bopanna decided not to participate.
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Mahesh Bhupathi and Rohan Bopanna were the defending champions, but Bhupathi decided not to participate.
 Bopanna played alongside Édouard Roger-Vasselin.
Rohan Bopanna and Florin Mergea were the defending champions, but Bopanna chose to compete in s'Hertogenbosch instead.
 Mergea played alongside Horia Tecău, but lost in the semifinals to Marcus Daniell and Artem Sitak.
Rohan Bopanna (born 4 March 1980) is an Indian professional tennis player.
 His singles career high ranking was World No. 213 in 2007 and his career high ranking in doubles was World No. 3 on 22 July 2013.
 Recently, most of his appearances in professional tournaments have been in doubles matches.
 He is a member of the Indian Davis Cup team since 2002.
 In 2010, he finished as a runner-up in doubles at the US Open, partnering with Aisam-ul-Haq Qureshi.
 He won the 2017 French Open - Mixed Doubles title with Gabriela Dabrowski of Canada becoming the fourth Indian player to win a Grand Slam title.
Cara Black (born 17 February 1979) is a professional tennis player from Zimbabwe.
 She is primarily a doubles specialist, winning 60 WTA and 11 ITF titles in that discipline.
 A former no. 1 ranked women's doubles player in the WTA Rankings, she has won ten Grand Slam titles in women's doubles and mixed doubles combined.
 By winning the mixed doubles title at the 2010 Australian Open, Black became the third woman in the Open Era to complete a Career Grand Slam in mixed doubles (after Martina Navratilova and Daniela Hantuchová).
 Having won one singles title on tour, she also peaked at no. 31 in the singles rankings in March 1999.
Rohan Bopanna and Colin Fleming were the defending champions, but Bopanna chose not to participate.
 Fleming played alongside Ross Hutchins, but lost in the quarterfinals to Marin Draganja and Mate Pavić.
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Mahesh Bhupathi and Leander Paes were the defending champions.
 However, they chose not to play together.
 Bhupathi played with Rohan Bopanna and Paes played with Radek Štěpánek
Rohan Bopanna and Daniel Nestor were the defending champions, but chose not to compete together.
 Bopanna played alongside Florin Mergea, but lost in the first round to Nestor and Radek Štepánek.
 Nestor and Štepánek lost in the quarterfinals to Łukasz Kubot and Marcin Matkowski.
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