In 2008, despite setting two world records in the lead-up to the Olympics, he failed to make it to the team. And now in 2012, he makes the trip to London as one of India's leading medal hopes.
Stefi Graf and Andre Agassi look back at their Olympic triumphs in this video interview.
The singles draw will be held on Thursday.
Mary, the lone Indian woman boxer to have qualified for the Olympics, has carved her niche as the leading figure in the sport in India. The Indian Amateur Boxing Federation interviewed her before she left for London.
Brazil go into the London Games looking not only for their first Olympic title but also seeking to find the team that will bring them success when they host the World Cup in 2014.
The British football team's hopes of winning a medal suffered a minor setback as they lost 0-2 to Brazil in a warm-up match before the London Olympics Games.
While Vladimir Smirnov's death at the Rome World Championships in 1982 shocked the sport to its core, the fatal accident proved to be a turning point in making fencing safer.
Millar has no plans to retire after the July 27-Aug. 12 London Games, where he will be aiming to add the one item missing from his resume - Olympic gold.
The 10-metres platform gold medallist, the only non-Chinese to win a diving gold in Beijing, sent out a stunning photograph on his Twitter feed and later told reporters he was having a great time.
The 24-year-old world silver medallist bore the flag for Malaysia in his Olympic debut at Beijing and now has his heart set on clinching his country's maiden gold medal.
Politicians also hoped his victory in the world's greatest cycling race could deliver other benefits including a boost to Britain's chances of hosting the world cycling championships.
David Cal is months away from a shot at winning a fifth Olympic medal, which would make him Spain's most decorated Olympian, but it is hard to tell as he ploughs a lonely furrow in this forgotten corner of the Iberian peninsula.
With an Olympic resume that already includes a complete set of medals, Van Koeverden heads to London with just one chance but plenty of expectations
Pareshnath Mukherjee, manager of the squad at the London Games, feels if the Village in Delhi was five-star during the Commonwealth Games, London isn't even a two-star.
Thrown out of school, Ashley McKenzie's life was changed by a tussle which broke out when another boy tried to make off with his prized Pokemon charizard card.
Syrian athletes have arrived in London and will compete at the 2012 Olympic Games, ending uncertainty about whether the team would be able to participate with fighting raging at home.
Police pulled the man from the water under the landmark bridge, from which Olympic rings were suspended to celebrate the 2012 London Games, and arrested him on a public order offence.
While Saina has been lucky to get a very favourable draw at the Olympics and looks set to win India's maiden medal in badminton, the doubles stars enjoyed no such luck.
Who’s to say that a clutch of medals the boxers in London won’t have an effect beyond Haryana? Haryana might become ‘Little Cuba’ yet, and India might yet learn to throw its punches properly.
Vasudevan Baskaran, who led India to its last Olympic hockey gold 32 years ago, feels the team needs to adopt the aggressive "Indian style of play" for a podium finish at the the London Games.
Somdev Devvarman on Monday asserted that the shoulder injury which kept him away from competitive tennis for eight months, will not have any impact on how he plays his game when he competes at the London Olympics.
Who gains from sponsoring the Olympics, the International Olympic Committee (IOC) or the 11 sponsors? An article in The Economist says both.
South Korea are the favourites after winning the last three Olympic team gold medals, though the United States are expected to run them close in London with world number one Brady Ellison anchoring the team.
Chris Hoy, whose four Olympic gold medals and host of world titles earned him a knighthood, will claim another honour on Friday when he will become the first cyclist to carry the British flag at the London Games opening ceremony.
India's lone medallist at World Athletics Championships Anju Bobby George said that the country has no chance of winning a medal at the London Olympics track and field events.
August 1, 1996 will remain synonymous with Michael Johnson.
International Olympic Committee President Jacques Rogge paid tribute to the 11 Israeli team members who were killed at the 1972 Munich Games at a ceremony at the Athletes Village in London on Monday.
The official mascots of London’s Olympic and Paralympic Games — Wenlock and Mandeville — are being called 'creepy and frightening.' Do mascots always win hearts? Here's a look mascots from the last five Olympics games.
In the summer of 2008, Sushil Kumar became a household name in India following his stupendous show at the Beijing Games where he became only the second Indian to win an Olympic wrestling bronze after KD Jadhav in Helsinki in 1952.
IOC President Jacques Rogge, who on Saturday had ruled out marking the 40th anniversary of the Munich massacre at the London Games opening ceremony, said the 11 victims deserved to be remembered.