You select twelve men playing at the US Open starting August 31st.
From the Official World Rankings website (2015 w/c 24/08/15) http://www.atpworldtour.com/Rankings/Singles.aspx
Your choice of players will be restricted by the following criteria:
Of your team of 12, at least 2 of your players must be ranked outside the Top 50.
Of the allowed 10 players ranked inside the Top 50, no more than 8 can be from the Top 35.
Of the allowed 8 players ranked inside the Top 35, no more than 6 can be from the Top 20.
Of the allowed 6 players ranked inside the Top 20, no more than 4 can be from the Top 10.
Of the allowed 4 players ranked inside the Top 10, no more than 2 can be from the Top 5.
Scoring System
You will score one point for each match won by one of your players in the first round.
You will score two points for each match won by one of your players in the second round.
You will score three points for each match won by one of your players in the third round.
You will score four points for each match won by one of your players in the fourth round.
You will score five points for each quarter-final match won by one of your players.
You will score six points for each semi-final match won by one of your players.
You will score seven points if one of your players wins the final.
You will score points for your best 10 performers over the course of the tournament.
If any of your players takes no part in the tournament, he will be replaced by the highest ranked player available.
The poster with the highest number of points at the end of the tournament will be declared the winner.
Good luck one and all
with yours truly bringing up the rear 