He and Paes became the first doubles team to reach the finals of all four Grand Slams, the first time such a feat has been achieved in the open era and the first time since 1952.
On 26 April of that year, they became the world no. 1 doubles team.
Bhupathi also won the US Open mixed doubles with Ai Sugiyama of Japan.
1974
Mahesh Shrinivas Bhupathi (born 7 June 1974) is an Indian former doubles world No. 1 tennis player.
Mahesh Shrinivas Bhupathi was born on 7 June 1974 in Chennai, India.
Mahesh Bhupathi is known for his big serve.
According to Nadal, his strong backhand makes him the best for an Ad Court player.
Roger Federer acclaims him as one of the best players of all time.
He often discusses strategies between the serves with his partner during the match and also communicates using finger-at-the-back signals.
Bhupathi appeared with Paes in six season finales.
1990
Mahesh Bhupathi is considered one of the top doubles players of the 1990s and 2000s.
1997
In 1997, he became the first Indian to win a major tournament (with Rika Hiraki).
1999
In 1999, Bhupathi won three doubles titles with Leander Paes, including the French Open and Wimbledon.
2002
Bhupathi broke up his partnership with Knowles and began playing once again with Max Mirnyi, with whom he played to win the 2002 US Open.
2006
With his win at the 2006 Australian Open mixed doubles, 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 2006, Bhupathi teamed with Martina Hingis in the Australian Open mixed doubles competition.
Entering the tournament unseeded and as wildcards, the first-time pair defeated four seeded opponents along the way, while only dropping a single set throughout.
Bhupathi and Hingis defeated the sixth-seeded team of Daniel Nestor and Elena Likhovtseva in straight sets, 6–3, 6–3, to capture the championship.
It was the sixth mixed doubles Grand Slam for Bhupathi, and the first one for Hingis.
By winning the Australian Open, Bhupathi completed a career Grand Slam in mixed doubles.
2007
In 2007, Bhupathi and Radek Štěpánek reached the 2007 Australian Open men's doubles event's quarterfinals.
Bhupathi teamed with Štěpánek at the 2007 French Open to make the doubles semifinals, defeating two-year defending champions Jonas Björkman and Max Mirnyi in the quarterfinals.
The team lost to the eventual champions Mark Knowles and Daniel Nestor.
After Wimbledon, Bhupathi teamed with Pavel Vízner to win the 2007 Canada Masters, defeating the top-ranked doubles team Bob and Mike Bryan en route.
After this victory, he won a tournament in New Haven with Nenad Zimonjić.
At the 2007 US Open, he and Zimonjić paired in doubles.
After the US Open, the team that beat Bhupathi and Štěpánek in the French Open semifinals, Knowles and Nestor, split up.
Bhupathi became Knowles' partner, while Zimonjić became Nestor's, but back surgery meant he was out until the end of the year.
2009
In 2009, Bhupathi and compatriot Sania Mirza won the mixed doubles title at the Australian Open, beating Nathalie Dechy and Andy Ram, 6–3, 6–1, in the final.
The Indian pair thus made up for the disappointment of the previous year's final when they were beaten by Sun Tiantian and Nenad Zimonjić.
With this win, Bhupathi's count in mixed doubles Grand Slam titles increased to seven.
2011
In 2011, Bhupathi reunited with former playing partner Leander Paes for the 2011 Australian Open.
The team reached the final, but lost 3–6, 4–6 to the Bryan brothers.
In 2011, they appeared, for the first time since 2002, after securing qualification in mid-October.
2012
On 7 June 2012, Bhupathi and Sania Mirza won the French Open mixed doubles.
On 4 November 2012, Bhupathi and partner Rohan Bopanna won the Paris Masters cup.
In spite of suffering a setback with their loss against Jonathan Marray and Frederik Nielsen in the ATP Tour Finals opener, the Indian duo reached the final round of the ATP Tour Finals, but suffered a defeat at the hands of Marcel Granollers and Marc López.
2013
Bhupathi and Bopanna played with different partners for the first three months of 2013, Bhupathi winning the tournament in Dubai in March with Michaël Llodra, but rejoined starting with the Monte-Carlo Masters.
2016
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.