Novak Djokovic has the highest career winning percentage in tennis history, surpassing Rafa Nadal. (As of 9 Oct, 2022)

Novak Djokovic 🇷🇸 -> 1022-205 = 83.293%

Rafael Nadal 🇪🇸 -> 1066-214 = 83.281%

Bjorn Borg 🇸🇪 -> 654-140 = 82.4%

Roger Federer 🇨🇭-> 1251-275 = 82.0%