Taekwondo: What to expect Four Americans all have legitimate shots at the podium in Beijing: The Lopez siblings, Diana, Mark, and Steven, and Charlotte Craig. Two bronze medals will now be awarded in the sport, in each weight class.

Traditionally, taekwondo competitions consist of 16 weight classes, eight for men and eight for women. In the Olympics, there are only eight classes -- four for each gender -- because the IOC limits the total number of taekwondo entrants to 128.

Moon Dae Sung won the heavyweight gold medal in Athens, defeating Greece's Alexandros Nikolaidis in the final. He'll be back to defend his title in Beijing.

With all that flying around, kicking and punching, how do they figure out who's won in taekwondo? Here's how.

Arguably the best international taekwondo player ever, Steven Lopez has won two gold medals and four world championships.

Know Korean? Try these taekwondo terms.

A world champion in 2005, Lopez will be competing in his first Olympics alongside brother Steven and sister Diana. Watch him do back flips.

Chinese Taipei's Chen Shih Hsin won gold in taekwondo in the under 58 kg division, one of two gold medals in taekwondo for the tiny nation.