Why does the topic of who is the greatest of all time always seem to end in disagreement? Contrary to what many may think, the question goes far deeper than merely choosing between current superstars Novak Djokovic and Iga Swiatek. One only has to examine other sports to see the need to look across the ages to find the Greatest of All Time

This debate flares up every time one of the greats adds to their list of career achievements. In any serious GOAT discussion, you must look at the entire history of the sport. But how do you go about comparing the skills and achievements of players from different periods in tennis history? The TG100 All-Time Ranking System combines data analysis in 4 categories and profiles on individual players will be reviewed annually.The data combines current champions with the greats of the past. These are then merged into a single list of the Greatest Tennis Players of All Time, which we unveil each year at our annual celebration event.