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post #31 of 351 (permalink) Old 12-26-2012, 10:49 AM Thread Starter
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Re: Alternative player ranking system

Quote:
Originally Posted by amirbachar View Post
I already posted ELO Ratings including historical results:
ELO Ratings
I also tested it to make very them very predictive.

Feel free to make your own version if you wish, though...
Thanks, Amirbachar, I'm aware of your work, and respect it. But my approach is different, especially (as I understood) regarding which matches are accountable. And it does't hurt to have multiple views at the same thing.

As I said, I'm not a statistician, and I don't pretend to the practical usefulness of the data. This is purely for informational/entertaining purposes.
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post #32 of 351 (permalink) Old 01-06-2013, 03:08 PM Thread Starter
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Elo ranking system - player "race" rank

The list is moved, and can be found in my last post.

Last edited by G.100sic; 07-29-2013 at 09:09 PM. Reason: Moving the list.
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post #33 of 351 (permalink) Old 01-09-2013, 02:48 PM Thread Starter
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Re: Alternative player ranking system

Another issue surfaced in the meantime that I had to address, regarding how to treat results of match that ended with the retirement of one of the players. My aim with this ranking is to take into account only what is really played (which IMO is in the spirit of the Elo rating system), and my atomic unit is a set, so if a player retired without completing a set, in my system I will award that set to his opponent, regardless of what was the result in that set at the moment of retirement.

Examples:
Today Stepanek retired against Benneteau at 0-0, 15/40, so, for the purpose of Elo rating I will record this match as 1-0 for Benneteau.
Yesterday G. Zemlja retired against A. Falla at 6-4, 3-1 for Falla, so this match is recorded as 2-0 for Falla.
And, if for example a player won the first set, and then retired in the second, I will record this match as 1-1.
You get the picture...
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post #34 of 351 (permalink) Old 01-13-2013, 03:03 PM Thread Starter
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Re: Alternative player ranking system

Weekly update ready, after 3 more events - Auckland, Sydney and Kooyong exhibition.
Alternative player ranking system
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post #35 of 351 (permalink) Old 01-16-2013, 04:20 PM
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Re: Alternative player ranking system

good!

Chile
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post #36 of 351 (permalink) Old 01-27-2013, 06:26 PM Thread Starter
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Re: Alternative player ranking system

Update after the AO.
Alternative player ranking system
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post #37 of 351 (permalink) Old 02-07-2013, 11:34 PM Thread Starter
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Re: Alternative player ranking system

This update comes rather late, but Davis Cup results turned out to be a bit challenging, bringing out new bugs in my programs.
Included are the results from Davis Cup World Group matches, and Group I too. I didn't feel like going deeper then G1, since very few of the top 100 players may be found there. Required too much of my time, which I haven't had much these days.
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post #38 of 351 (permalink) Old 02-11-2013, 08:18 PM Thread Starter
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Re: Alternative player ranking system

Update after Vina del Mar, Zagreb and Montpellier.
Alternative player ranking system
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post #39 of 351 (permalink) Old 02-12-2013, 10:21 PM Thread Starter
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Re: Alternative player ranking system

I edit my post with an update, and the next day it is reverted to previous?!?
Then I have to edit it again!
And this is not the first time!
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post #40 of 351 (permalink) Old 02-18-2013, 07:23 PM Thread Starter
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Re: Alternative player ranking system

This update includes results from tournaments in Rotterdam, Sao Paulo and San Jose.
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post #41 of 351 (permalink) Old 02-18-2013, 07:38 PM Thread Starter
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Re: Alternative player ranking system

Since I've decided not to use any bias value, interesting thing to notice is that so far the difference between the first and the last on the list has accumulated to nearly 260 points.
The best average points per match (of those who played at least 2 matches) has Novak Djokovic, 16 points per match.
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post #42 of 351 (permalink) Old 02-24-2013, 10:32 PM Thread Starter
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Re: Alternative player ranking system

An update after Marseille, Buenos Aires and Memphis.
David Ferrer replaced Novak Djokovic on the top spot, after having played 22 matches already this season.
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post #43 of 351 (permalink) Old 03-04-2013, 10:31 PM Thread Starter
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Re: Alternative player ranking system

New update ready:
Alternative player ranking system

Djokovic back to top position, Nadal rising fast.
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post #44 of 351 (permalink) Old 03-18-2013, 09:10 AM Thread Starter
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Re: Alternative player ranking system

Indian Wells update comming...
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post #45 of 351 (permalink) Old 03-18-2013, 09:36 AM Thread Starter
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Re: Alternative player ranking system

Comparison of Elo ranking to the official ATP race ranking:
Code:
"Race"                       ATP race 
rank   Player                Rank     Diff
  1    Novak Djokovic           1        0
  2    David Ferrer             3        1
  3    Tomas Berdych            6        3
  4    Juan Martin Del Potro    5        1
  5    Rafael Nadal             2       -3
  6    Andy Murray              4       -2
  7    Jo-Wilfried Tsonga       9        2
  8    Roger Federer            7       -1
  9    Richard Gasquet          8       -1
 10    Stanislas Wawrinka      17        7
 11    Gilles Simon            12        1
 12    Kevin Anderson          15        3
 13    Nicolas Almagro         11       -2
 14    Marin Cilic             13       -1
 15    Milos Raonic            13       -2
 16    Denis Istomin           24        8
 17    Bernard Tomic           27       10
 18    Ernests Gulbis          20        2
 19    Julien Benneteau        15       -4
 20    Sam Querrey             17       -3
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