Who has the most master 1000 titles?

Related questions

1. Can Djokovic surpass Federer?
2. How much money does Nike pay Roger Federer?
3. Is Novak Djokovic the best tennis player ever?
4. Which Masters 1000 Nadal has not won?
5. Who has winning record against Djokovic?
6. Did Serena Williams win her match?
7. Is Federer better than Nadal?
8. Is Novak Djokovic the greatest of all time?
9. What is the age difference between Djokovic and Federer?
10. What tournament is next for Roger Federer?

Tags

1. #career
2. #nadal
3. #doubles
4. #called
5. #titles
6. #number
7. #events
8. #singles
9. #winning
10. #during
11. #rafael
12. #bryan
13. #golden
14. #holds
15. #record
16. #masters
17. #greatest