Serena Williams and Maria Sharapova surprised tennis fans on Saturday when Williams walked out to introduce Sharapova into the International Tennis Hall of Fame. The two tennis stars shared a long rivalry that Williams described Saturday as “so electric and so iconic.

Sharapova was honored with an official U.S. Open ring Sunday at Arthur Ashe Stadium, following her induction into the International Tennis Hall of Fame. She accepted her latest hardware in the latest rendition of the tennis dress that changed the sport. “New York City, what a special place and special court,” Sharapova said.

Tennis legend Maria Sharapova joins TODAY to talk about her induction into the International Tennis Hall of Fame, calling it a celebration of the successful moments, the tough battles and the rivalries coming together.