Rafael Nadal edged Novak Djokovic and Roger Federer in one surprise are this year, according to the ATP stats.
The 16-time Grand Slam champion had the highest win percentage of any professional tennis player in 2018 with 55.4%.
The second was world NO1 Novak Djokovic, with 54.5% and Federer was just behind in third with 54.4% having played a total of 9377 points.
In addition, Nadal won in the Monte-Carlo Masters, Barcelona Open, Italian Open, French Open and Canadian Open before he was forced to withdraw from the Paris Masters, due to ankle surgery.