Mahesh Bhupathi and Mark Knowles were the defending champions, but they chose to not compete together this year.
 Bhupathi played with Max Mirnyi and Knowles partnered with Radek Štěpánek.
Arantxa Sánchez Vicario and Todd Woodbridge were the defending champions but they competed with different partners that year, Sánchez Vicario with Emilio Sánchez and Woodbridge with Helena Suková.
Mahesh Shrinivas Bhupathi (born 7 June 1974) is a retired Indian professional tennis player.
 In 1997, he became the first Indian to win a Grand Slam tournament (with Rika Hiraki).
 With his win at the Australian Open mixed doubles in 2006, he joined the elite group of eight tennis players who have achieved a career Grand Slam in mixed doubles.
 He is also the founder of International Premier Tennis League.
 In December 2016, Bhupathi was appointed as India's next non-playing Davis Cup captain and took over the reins from Anand Amritraj in February 2017.
Mahesh Bhupathi and Leander Paes were the defending champions, but did not participate together.
 Paes played with Tomáš Cibulec but they lost in the semifinals to Mark Knowles and Daniel Nestor.
 Bhupathi partnered with Max Mirnyi but they lost in semifinals to Paul Haarhuis and Yevgeny Kafelnikov.
Emilio Ángel Sánchez Vicario (born 29 May 1965) is a former professional tennis player from Spain.
 He won three Grand Slam doubles titles and the men's doubles silver medal at the 1988 Olympic Games.
 He is the brother of multiple Grand Slam winner Arantxa.
 Sanchez since retiring captained his nation to Davis Cup success in 2008.
 In 2012 Sanchez was a tournament director for two wheelchair tennis events.
Mahesh Bhupathi and Michaël Llodra were the defending champions, but Llodra chose not to participate.
 Bhupathi played alongside Denis Istomin, but they lost in the quarterfinals to Rohan Bopanna and Aisam-ul-Haq Qureshi.
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Mahesh Bhupathi and Leander Paes were the defending champions, but this year Bhupathi played with Rohan Bopanna and Paes, who also won the tournament in 2010, played with Radek Štěpánek.
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Mahesh Bhupathi Tennis Academy is a tennis training facility started by Indian tennis player Mahesh Bhupathi.
 The Academy has facilities across 9 states in India as well as in the UAE.
Mahesh Bhupathi and Elena Likhovtseva were the defending champions, but played in this year with different partners.
 Bhupathi teamed up with Paola Suárez and lost in third round to Nenad Zimonjić and Iroda Tulyaganova, while Likhovtseva teamed up with Bob Bryan and lost in second round to Andy Ram and Anastasia Rodionova.
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

Question: Which sport is played professionally by both Emilio Sánchez and Mahesh Bhupathi?
Answer: Tennis