Red-hot  Nick Kyrgios on state of mind ahead of Wednesday's showdown vs. world No. 1 Daniil Medvedev.

Approaching her tennis curtain call, Serena Williams reflects on her magnificent legacy.

Impressed by Jesse Greene's tone, Coco Gauff offered the chair umpire sound career advice.

"I love playing... but I can't do this forever," Serena Williams said.

When Roger Federer makes a pinky promise, it's a game-changer for one young fan.

Yoshihito Nishioka on why he rates Nick Kyrgios' service game as the best in the sport.

John Isner says it's ridiculous Novak Djokovic isn't permitted to play US Open as of now.