On Saturday, the biggest names in tennis and music took to the court to perform in an afternoon of tennis fun and musical melodies at 2018 Arthur Ashe Kids' Day powered by Net Generation. 

The day-long celebration of tennis and music, held on the grounds of the USTA Billie Jean King National Tennis Center in Flushing Meadows, kicked off the 2017 US Open, which runs from Aug. 27-Sept. 9.

Around the grounds, kids got their faces painted, practiced their tennis skills with plenty of on-court activities and rocked out at the AAKD Festival Stage hosted by Radio Disney, which featured up-and-coming musical acts JAGMAC, 4th Ave, Brynn Elliott, Trevis, X's & O's, GoNoodle's Blazer Fresh and Meg Donnelly, along with host Daniel Dudley.

The day of festivities culminated in a stadium show in Arthur Ashe Stadium, which was hosted by Skai Jackson, Alex Aiono and Radio Disney's Morgan and featured today’s biggest stars in both tennis and music.

The stadium was full of energy, as attendees clapped together their colorful Net Generation bam sticks in anticipation of all the stars.

"It's a great honor and pleasure to be a part of Kids' Day. It is always a highlight of the year."

Standout National Junior Tennis & Learning Network (NJTL) players were joined by tennis greats Rafael Nadal, Angelique Kerber, Novak Djokovic and Madison Keys, who competed in a timed skill-shot challenge, trying to hit as many targets as possible. 

Two-time US Open men's singles champion Djokovic had an especially exciting Arthur Ashe Kids' Day, as his son sat in the stands and watched his dad take part in the festivities.

"It's a great honor and pleasure to be a part of Kids' Day," said Djokovic. "It is always a highlight of the year."

Fans were also treated to plenty of music to dance to, with performances from Latin pop group CNCO, alt-pop sibling trio Echosmith, boy band In Real Life, singer-songwriter AJ Mitchell and pop singer Kim Petras. 

New mom Serena Williams took to the courts with Net Generation tennis players, rallying with the young players and partaking in activities with them, including jumping rope. 

The show concluded with a performance from Shine MSD, a group of Marjory Stoneman Douglas High School drama students who formed a nonprofit in March after the shooting at their school in February. Shine MSD performed its original song, "Shine," written by MSD students Sawyer Garrity and Andrea Pena.

The stadium show was an ace with the crowd.

Proceeds from Arthur Ashe Kids’ Day benefit the USTA Foundation, which helps fund NJTL, a nationwide group of more than 500 nonprofit youth-development organizations that provide free or low-cost tennis, education and life-skills programming to more than 225,000 children each year. NJTL was founded 49 years ago by Arthur Ashe, Charlie Pasarell and Sheridan Snyder.