Belgium and Nigeria will play in Shanghai in the other semi-final.

The Argentina - Brazil match is being billed as the Ronaldinho-Lionel Messi clash.

“It’s a match between two great teams,” Brazil midfielder Anderson said. “We are not afraid of them and they are not afraid of us. At the end we will know who will continue to the final and who was the best team.”

Read more: It’s Messi vs. Ronaldinho just as much as Brazil vs. Argentina

Four of those medals are in the swimming: Men’s 400m Individual Medley, Men’s 400m Freestyle, Women’s 400m Individual Medley and Women’s 4 x 100m Freestyle Relay.

It will be Michael Phelps first chance for a gold medal today in the 400 meter individual medley - 10 a.m. Beijing time. He broke his own world record yesterday in the heat. He will also be in six qualifying heats.

Grant Hackett from Australia will swim in the men’s 400 meter freestyle final today - 10:21 a.m Beijing time. Katie Hoff will swim in the 400 meter individual medley. She will face challenges from Elizabeth Beisel and Stephanie Rice from Australia.

The women’s 4 x 100 meter freestyle relay will be an exciting event and fought between swimming rivals Australia and the United States.

There will two more finals each in shooting, weightlifting and judo. The judo competition will feature men’s 66 kilogram class and women’s 52 kilo. In the weightlifting we have women’s 53 kilogram and men’s 56 kilogram.

The unbeatable Koreans will be favorites in the Olympic women’s team archery competition. Men’s Individual Epee will be fought today with the world number one Fernandez Briceno from Italy hot favorite for the event.

Diving also gets under away today with the Women’s Synchronized Three Meter Springboard final. Another chance for China to win some medals. Watch out for Chinese diving star Guo Jingjing.

Following the men’s road race from yesterday, it is the women’s turn today with Sara Carrigan of Australia and Germany’s Judith Arndt favorites for the event.

Roger Federer has a chance today to show he is still number one. Lionel Messi will be on the field again for Argentina who play Australia and you can see the incredible Ronaldinho play for Brazil against New Zealand.

One of the most anticipated games for today will be the match between the United States and China in the men’s basketball. Even George Bush said he wanted to attend to the game. It will be a great chance to see the US stars play like: Kobe Bryant, Jason Kidd, Deron Williams and LeBron James.