Organization: University of Illinois at Chicago
Date: Mon, 25 Jan 1993 11:38:53 CST
From: <U58476@uicvm.uic.edu>
Newsgroups: rec.sport.tennis
Subject: Re: Receiving points from victories over ranked players
Distribution: world

In article <1jvmc8INNfs7@geraldo.cc.utexas.edu>, patano@ccwf.cc.utexas.edu
(Scott Patano) says:

>     Now on to my question:  I am aware that players receive additional
>     points added to their computer score for defeating ranked players;
>     however, I am not sure how the system works.

The women's computer rankings are determined as follows:
Points are awarded based on how far a player advances in a tournament.  Bonus
points, based on the ranking of opponents beaten in the particular tournament
are added.  The total points awarded for each tournament played within a
52-week period are added & then divided by the number of tournaments played
in that same period.  Unlike the men's system, all tournaments count (except
exhibitions, Federation Cup, Olympics, etc).

              Points per round               Bonus points**
Grand Slams   winner     350                 loser's rank    #pts
              finalist   245                      1          58
              semifin.   158                      2          52
              quarterfin  88                     3-5         40
              4th round   50                     6-8         28
              3rd round   30                     9-11        21
              2nd round   18                    12-18        15
              1st round    1                    19-30         8
                                                31-50         5
regular       winner     200                    51-75         4
              finalist   140                    76-100        3
              semifin     90                   101-150        2
              quarterfin  50                   151-200        1
                                               201-300        0.5
                                               301-500        0.3

So for example, whoever wins on Saturday will receive 350 points plus the
bonus points accumulated for every player they beat (eg Seles got 460
computer points for winning the Australian last year, beating the #5 & #7 (?)
en route; Graf got 470 points for Wimbledon, beating the #1 & #3 en route).
As far as the actual ranking, here's an example for the 52-week period from
Dec '91-Dec'92: Seles accumulated ~4247 points/15 tournaments played ~283;
Graf accumulated ~3530 points/14 played ~253 (Steffi actually played 15, but
Federation Cup is not factored into the computer, although the wins or losses
are recorded themselves count in a players' win-loss record).  Any particular
current result will "replace" the results of 52 weeks ago which explains why
Sabatini lost some points before Sydney without even playing: the Sydney
tournament was a week LATER this year than last year, so consequently she lost
her points from last year before she could even defend them.

**Bonus points rewarded are based on actual ranking, & not seeding.
**The only tournament that counts but does not follow this formula is the
  year-ending VS Championships.  Can't seem to figure out how points add up
  for this tournament, but there SEEMS to be a factor added in that is based
  on how well you did for that year (or maybe the players' ranking)...hard to
  say.

Natasha
Newsgroups: rec.sport.tennis