How does it work?
Sorry. l havnt made myself clear. Im talking about the points system regarding their rankings.

15
20
40 ( match point )

if both players score 40:

Deuce ( both )
Adv (( match point ) player who wins the piont )
( If the player on deuce wins a piont now then both players go to deuce. )

Players are ranked on the basis of their best 14 results in the previous 52 weeks.

This page has everything about rankings - http://tennis28.com/rankings/systems.html

Keeping score in a tennis game is somewhat unusual, but basically each game contains a series of points from 0 to 3. When the score is called during a game, special tennis terms r used:

0 game points = Love
1 game point = a score of 15
2 game points = a score of 30
3 game points = a score of 40
4 game points = Game.

A tennis set contains a certain number of tennis games. During a set, the players alternate serving, switching on every odd game. A set usually ends when one player wins 6 games plus 2 more games than their opponent. If both players win 6 games, then the set is decided by a tie-break game.

Tennis matches r made up of an odd number of sets, in which the player with the most set wins is the winner of the match. A match ends as soon as one player wins more than half of the total games. For example, if ur match is best of 3, the match ends as soon as one player wins 2 games.

The point system for rankings is a system based on points per round. For each round u get to in a tournament, u get a certain amount of points. The further u get, the more points u get. There r also different levels of tournaments. Some offer 500 points for the winner & then there r Grand Slams, which offer 2000 points for the winner. As long as u win one match, u will get some points. The points stay in the player is ranking for 1 year.

If u have any more questions this site may work well.

http://doingtennisright.com/