Greg Louganis, who won four Olympic gold medals in diving, believes it's easier for Olympians competing in an individual sport to come out gay.

Twenty-one openly gay athletes are competing in the 2012 Summer Olympics taking place over the next two weeks in London. At the 2004 games held in Athens, 11 openly gay athletes competed. Four years later, in Beijing, the number was 10.

Greg Louganis told gay blog that many athletes are reluctant to come out of the closet.

“All I can do is relate to my own journey,” said Louganis, who came out gay after retiring. “I was out to my friends and my family. It was just my policy not to discuss my sexuality to members of the media. I wanted my participation in the sport to be about the sport. I didn't want it to be about being the gay diver.”

“Today, we have more positive images in media when it comes to sexuality and representation – we're just regular people – so I think it's a more positive atmosphere. When I was on my book tour in '95, I had a lot of people come up to me and say they were gay and they weren't out and they were in a team sport. It's tough if you're in a team sport, because you're relying on your team. I think it's a little easier when you're talking about an individual sport because it's just you out there and you're pretty self-reliant.”

According to, openly gay athletes include Marilyn Agliotti (Netherlands, field hockey); Judith Arndt (Germany, cycling); Seimone Augustus (United States, basketball); Natalie Cook (Australia, beach volleyball); Lisa Dahlkvist (Sweden, soccer); Carlien Dirkse van den Heuvel (Netherlands, field hockey); Imke Duplitzer (Germany, fencing); Edward Gal (Netherlands, equestrian); Jessica Harrison (France, triathlon); Carl Hester (Britain, equestrian); Alexandra Lacrabère (France, handball); Jessica Landström (Sweden, soccer); Hedvig Lindahl (Sweden, soccer); Matthew Mitcham (Australia, diving); Maartje Paumen (Netherlands, field hockey); Carole Péon (France, triathlon); Mayssa Pessoa (Brazil, handball); Megan Rapinoe (United States soccer); Lisa Raymond (United States, doubles tennis); Rikke Skov (Denmark, handball); Ina-Yoko Teutenberg (Germany, cycling).

Matthew Mitcham came out before competing in 2008, while Megan Rapinoe only recently discussed her sexual orientation.

(Related: Gay Olympic diver & boyfriend smooch after win.)