I tried to make a Calendar MOD, with each tournament in ATP World Tour after 2001, respecting each week of tournaments, but making some changes to organize the confuse calendar of ATP. All tournament follow the actual system, with 1000, 500 and 250 points to champion.
The Davis Cup happens in many different weeks year by year, so I decided to standardize the event in week 5, 14, 37 and 47, to favor the calendar planning.
Some tournaments with many different weeks I tried to diminish the variation, reducing the number that they happen.