Kids of all ages took over the U.S. Open on Saturday–the tournament switched gears to appeal to the younger set. NY1’s Bree Driscoll has the story.

While some of them are barely taller than the net, these kids have high hopes of becoming tennis champions someday.

"I am hoping that I go pro one day like Rafa and Djokovic, and I am practicing a lot. I just hope I make it far and I just get to my goal," said participant Sol Cornejo.

"I decided to come out here because I love tennis so much," said 12-year-old Emilio Marino.

"The balls. I don't know why. I just really like the balls," said nine-year-old Zoe Cali.

They were able to volley around and get tips from some of the best in the game as part of the 20th Annual Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center Saturday.

"The goal of this event is to get a racket in the hands of every young kid in America," said Michael Fuir, Executive Producer of Entertainment at the U.S. Open.

There were also face painting, juggling and concerts.

But the real highlight of the day was seeing some of their favorite players, like Serena Williams and Roger Federer.

"I think it is a good experience for the kids because they can grow up and play tennis and kind of be like Serena Williams.  She is good at everything," said 14-year-old Chynna Gamble.

"Federer, because ever since I was little, I don't know why, but he was my idol," said 10-year-old J.D. Carrion.

"I want to see Novak because my sister was telling me he was really good, and she wants to see him too, and I want to see Serena Williams," said 14-year-old Avianna Miller.

While the event is technically a kids day, parents are getting in on the game too, and having just as much fun as the younger generation.

"It is a family day, and it's before all the rest of the events start, so it is a good way to end the summer before she starts high school, my older one just started college. To get together as a family to get to do something," said Stacy Miller.

"I always wanted to come here. I have been waiting for seven years to come over and bring the kids," said Willy Almonte.

If the kids and parents didn't get their fill, the U.S. Open will run through September 13.