IOC News

US President Barack Obama addresses IOC members during the Chicago 2016 presentation on October 2, 2009 at the Bella Centre in Copenhagen, Denmark.

In a major shock the raging hot favourite Chicago has failed to get past the first round of voting to pick the host city of the 2016 Olympic Games.

Brazil's President Luiz Inacio Lula da Silva, left, Rio 2016 bid President Carlos Arthur Nuzman, center, and Brazilian soccer great Pele, right, celebrate with their delegation after it was announced that Rio de Janeiro has won the bid to host the 2016 Summer Olympic Games at the Bella Center on October 2, 2009 in Copenhagen, Denmark.

Rio de Janeiro will be the first South American city to host the Olympics after winning an historic vote to stage the 2016 Games at the IOC session in Copenhagen.

Barack and Michelle Obama campaigning together in 2008.

The first lady, Michelle Obama, will be a key speaker for Chicago 2016 at the final, and vital, presentation to the IOC members in Copenhagen on Friday morning (445pm AEST).

President of the IOC Jacques Rogge looks on during a press conference on June 16, 2009 in Lausanne, Switzerland.

One of the tightest and most hard-fought battles to win the right to host an Olympic Games will come to its eagerly-anticipated climax in Copenhagen this week

IOC President Jacques Rogge speaking at the IOC Session in Lausanne, Switzerland where the four candidate cities for 2016 presented to 93 IOC Members.

International Olympic Committee president Jacques Rogge expects the race for the 2016 Olympics to be decided by "a couple of votes"

Delegates from the Rio 2016 Olympic bid celebrate when they are short-listed in 2008. They are up against Chicago, Tokyo and Madrid for the October vote.

Rio Janeiro and Chicago's chances of hosting the 2016 Olympic Games have received a boost after they appeared to edge ahead in the technical evaluation of the four candidates.

IOC President Jacques Rogge speaking at the IOC Session in Lausanne, Switzerland where the four candidate cities for 2016 presented to 93 IOC Members.

The four candidate cities bidding to host the Games of the XXXI Olympiad in 2016 - Chicago (USA), Tokyo (Japan), Rio de Janeiro (Brazil) and Madrid (Spain) all presented to IOC Members

Tiger Woods celebrates with the trophy after winning on the first sudden death playoff hole during the 108th U.S. Open at the Torrey Pines Golf Course (South Course) on June 16, 2008 in San Diego, California.

With seven sports vying for inclusion in the 2016 Summer Games, Colin Montgomerie and Annika Sorenstam delivered the message on Monday that winning an Olympic gold medal in golf would be as important as winning a major.

International Olympic Committee President Jacques Rogge has said “timing is right” for women’s boxing to be part of the Olympics.

A labratory technician works at the Doping Control Laboratory of the Biochemical Institute at the University for Sports on August 19, 2008 in Cologne, Germany. (Photo by Patrik Stollarz/Bongarts/Getty Images)

Bahrain's first Olympic track and field gold medalist, an Italian cycling silver medalist and a prominent German cyclist are among the six athletes caught for blood doping in retests of their Beijing samples.