Rafael Nadal cruised through the Monte Carlo Masters without dropping a set. (Julian Finney/Getty Images)
Rafael Nadal won a record 20th Masters 1000 title with his victory over Novak Djokovic in Monte Carlo. Here are some numbers that make him worthy of being dubbed "The King of Clay," plus some other fun stats thrown in.
20: Masters 1000 titles won by Nadal, the most by any player in ATP history.
15: Masters titles won by Nadal on clay.
8: Consecutive Monte Carlo Masters titles won by Nadal.
0: ATP players not named Nadal to win a tournament eight times, let alone eight straight times.
30: Consecutive matches won by Nadal in Barcelona, after Wednesday's second-round win.
42: Consecutive matches won by Nadal in Monte Carlo.
.929: Nadal's career winning percentage on clay, the best in the Open Era.
18: Matches that Nadal has lost on clay in his 11-year career.
15.9: Aces per match by Milos Raonic, the highest average of any active player, including John Isner (13.1).
12: Angelique Kerber's winning streak on indoor courts after beating Roberta Vinci in the opening round of the Porsche Grand Prix in Stuttgart, Germany, on Tuesday.
6: ATP tournaments played in the U.S. between mid-January and early May starting next year. In 1980, there were 20. In 2014, there will be five.
0: Serbian men currently in the main draw of the Serbian Open. Djokovic, Janko Tipasarevic and Victor Troicki are all skipping out. 2: Career top-20 wins for Mona Barthel. They both also happen to be over Serbs: Jelena Jankovic and Ana Ivanovic.