RIO DE JANIERO - The world turns its attention to Rio de Janeiro tonight for opening ceremonies of the Olympic Summer Games where Team USA is ready to take on the world.
The U.S. is represented by 554 athletes - 292 of them are women. That's the most women who have competed for any country.
Here's a closer look at some of the athletes to watch, with the American women leading the way.
The USA women's soccer team's 2-0 win over New Zealand August 4 sets them on the right path to clinch their fourth gold medal and underscores the continued dominance of American women.
"They rule. In London, more American women won gold than American men. Women's basketball, they dominate. The Williams sisters. They both won four gold medals, they can both win in singles," says NBC Sportscaster, Mary Carillo.
We didn't think we'd see Michael Phelps here in Rio.
"No, no. He said he was done in London. He already won 22 Olympic medals, 18 of them his favorite color: gold. But now he's coming back, and he's got a chance - a very legitimate chance, Lester - of taking on maybe three more golds," says Carillo.
And don't forget the splash American Katie Lendecky made four years ago.
"She comes into London, a 15-year-old, wins the 800 freestyle, stuns the world, four years later she could win a fistful of golds. She wins by breathtaking margins," says Carillo.
In gymnastics, Mary says watch out for American newcomer Simone Biles.
"I'm telling you, this kid's got real heft, and she does things that nobody else has seen before. She, I truly believe, is one of the greatest athletes that anyone has ever seen," says Carillo.
And Mary says don't count out Jamaican sprinter Usain Bolt.
"Yeah, he's a little dinged up, but he's as big a presence as anyone," says Carillo.
This is Olympics number 13 for Mary, who has extra reason to love this one.
"I've been watching so much television, so much political pie fighting all summer, and you are here, the candidates talk about 'this is what America represents.' This is what america represents. I just love the idea that the American flag is going to go up for the next 17 days, and it's gonna mean something special, and people have relief from all that political fatigue. I don't have to tell you what that's been like," says Carillo.