3 questions please:
1. what are the 12 mandatory tournaments? i assume that the 1000 tournaments (total of 9) + which 3 more?
2. is the olympics a mandatory tournament?
3. is the rankings for the race to london are the same? (4 grand slams, 8 best of ATP1000 ect...)
1. 4 Grand Slams + 8 of 9 ATP1000's (Best 8 are used for Rankings)
3. Yes, both Rankings use the same points structure (12 Mand + 6 best of the rest). However, if you qualify for the London ATP Masters at the end of the Season, then ranking points achieved at London will count as a 19th tournament in the Entry Rankings.