The phrase "tennis superstar" refers to someone who is very talented and successful in playing tennis. They are regarded as one of the best players in the sport. Full definition
AccorHotels, an official partner of the Australian Open, has for the third year in a row signed on tennis superstar Serena Williams as its ambassador for the tournament. (breakingtravelnews.com)
For example, it posted a close - up of tennis superstar Roger Federer's airborne feet at the Wimbledon tournament this week. (entrepreneur.com)
Toronto Maple Leafs forward Phil Kessel and Dallas Stars forward Jason Spezza playe din the game and tennis superstar Roger Federer showed up to play in the game. (diehardsport.com)