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-   -   Quality points & Ranking musings - 2012 Year End (http://www.tennisforum.com/showthread.php?t=470479)

Pavstry. Oct 29th, 2012 12:17 PM
Quality points & Ranking musings - 2012 Year End
 
Many poster complaining that WTA should bring back Quality Points.
Here is how Year End Top10 would look using Quality Points:

Code:
                        Ranking Pts          Quality Pts        Overall Pts        Q Pts % of Overall
 1./(1.) Azarenka        10595                6022                16617                36,24%               
 2./(3.) S.Williams        9400                6234                15634                39,87%               
 3./(2.) Sharapova        10045                5378                15423                34,87%                 
 4./(4.) Radwanska        7425                3461                10886                31,79%               
 5./(5.) Kerber                5550                2853                8403                33,95%               
 6./(7.) Li Na                5095                2876                7971                36,08%       
 7./(6.) Errani                5100                2533                7633                33,18%       
 8./(8.) Kvitova        5085                2044                7129                28,67%               
 9./(9.) Stosur                4135                1913                6048                31,63%               
10./(10.) Wozniacki        3765                2193                5958                36,81%       
11./(11.) Bartoli        3740                1820                5560                32,73%       



*  Ranking system & Zero pointers are based on 2012 Ranking Rules.
**  Official WTA ranking in brackets.

Average Quality Points earned per tournament:
Code:
                        Quality Pts        # of Tours        Q pts/Tournament
 1./(3.) S.Williams        6234                13                479,54
 2./(2.) Sharapova        5408                14                386,29 
 3./(1.) Azarenka        6046                17                355,65
 4./(7.) Li Na                2876                17                169,18
 5./(5.) Kerber        3408                21                162,29
 6./(4.) Radwanska        3564                22                162,00
 7./(8.) Kvitova        2262                18                125,67
 8./(6.) Errani                2676                23                116,35
 9./(10.) Wozniacki        2440                23                106,09
10./(9.) Stosur                2071                23                94,14
11./(11.) Bartoli        1862                25                74,48

* All tournament they actually played, not including Mandatory Zero Pointers.

Since many fans would complain that Azarenka played Rome and Montreal just to avoid Zero Pointers
under current system, here are some different scenarios for the Top3:

Azarenka w/o Rome
 -./(1.) Azarenka        6046                16                377,87
Azarenka w/o Rome & Montreal
 -./(1.) Azarenka        6022                15                401,46
S.Williams w/o Cincinnati
 -./(3.) S.Williams        6203                12                516,91
Sharapova w/o Paris
 -./(2.) Sharapova        5378                13                413,69


Quality Points Calculating Method:
Since WTA doesnt have an official up to date quality point system, we have to go back to old ones.
The method is based on the 2005 WTA Ranking System:
http://www.tennisweb.it/Download/WTA...ing_System.pdf
Since points awarded for a slam title went up from 650pts -> 2000pts, which is almost 3 times more,
simply I used the same multiplying for quality points. This is how it looks:
Code:
Quality Points               
Loser's Rank    Non-Slam  Slam
1                300          600
2                225          450
3                198          396
4                165          330
5                150          300
6-10                129          258
11-16                105          210
17-25                69          138
26-35                45            90
36-50                30            60
51-75                24            48
76-120                12            24
121-250                  6            12
251-500                  3            6
501 >                  0            0

Pavstry. Oct 29th, 2012 12:17 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Quality Points earned by winners of the biggest tournaments


Code:
Slam
                Tournament        Ranking Pts        Quality Pts        Total        Q Pts % of Ranking Pts
 1. S.Williams        Wimbledon        2000                1386                3386        69,3%
 2. S.Williams        USO                2000                1224                3224        61,2%
 3. Azarenka        AO                2000                954                2954        47,7%
 4. Sharapova        RG                2000                804                2804        40,2%

Premier-M/5
                Tournament        Ranking Pts        Quality Pts        Total        Q Pts % of Ranking Pts
 1. S.Williams        Madrid                1000                759                1759        75,9%
 2. Azarenka        Indian Wells        1000                624                1624        62,4%
 2. Petrova        Tokyo                900                540                1440        60,0%
 4. Azarenka        Beijing                1000                475                1475        47,5%
 5. Kvitova        Montreal        900                417                1317        46,3%
 6. Sharapova        Rome                900                393                1293        43,7%
 6. Li Na        Cincinnati        900                393                1293        43,7%
 8. Azarenka        Doha                900                378                1278        42,0%
 9. Radwanska        Miami                1000                393                1393        39,3%

Premier-700
                Tournament        Ranking Pts        Quality Pts        Total        Q Pts % of Ranking Pts
 1. Sharapova        Stuttgart        470                660                1130        140,4%
 2. Azarenka        Sydney                470                529                989        110,4%
 3. Kerber        Paris                470                462                932        98,3%
 4. Kanepi        Brisbane        470                415                885        88,3%
 5. Paszek        Eastbourne        470                363                833        77,2%
 6. S.Williams        Charleston        470                354                824        75,3%
 7. Radwanska        Dubai                470                321                791        68,3%
 8. Wozniacki        Moscow                470                309                779        65,7%
 9. Kvitova        New Haven        470                306                776        65,1%
10. Cibulkova        Carlsbad        470                258                728        54,9%
11. Radwanska        Brussels        470                114                584        24,3%
12. S.Williams        Stanford        470                  85                545        16,0%

Other
                Tournament        Ranking Pts        Quality Pts        Total        Q Pts % of Ranking Pts
    S.Williams        Olympics        685                831                1516        121,3%
    S.Williams        YEC                1500                969                2469    64,6%

Pavstry. Oct 29th, 2012 12:18 PM
Re: Quality points & Ranking musings - 2012 Year End
 
IMO I dont agree with the complains and it looks a pointless system, because over 52 weeks period it doesnt make such big difference as many people think, while unnecessarily complicates the calculating & understanding of the rankings.

There are only 3 changes in top11 and the only notable is Serena overtaking Maria, and even that way smaller leap than many people would think.

Christinawww Oct 29th, 2012 12:29 PM
Re: Quality points & Ranking musings - 2012 Year End
 
I thought Serena would be number 1 with quality points as she beat Vika, who was number 1, so many times (I've stopped counting)

Imperfect Angel Oct 29th, 2012 12:30 PM
Re: Quality points & Ranking musings - 2012 Year End
 
It doesn't make much difference this particular year because the real top players really stepped up in the big events.
If the quality points system was applied in the past few years, you'd see more significant difference.:shrug:

bandabou Oct 29th, 2012 12:35 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Not surprising that Serena would overleap Masha..she had no trouble beating her and Vika.

Mitten Kitten Oct 29th, 2012 02:34 PM
Re: Quality points & Ranking musings - 2012 Year End
 
quite surprised to see Caroline with more quality points than Petra :eek:

Pavstry. Oct 29th, 2012 02:39 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Added "Quality Points earned by winners of the biggest tournaments" to 2nd post.

Geisha Oct 29th, 2012 03:37 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Wait. Am I missing something? How do we know if Serena would be ahead of Maria by the time the YEC came around. She'd be getting #3 points not #2 points. Right?

Meelis Oct 29th, 2012 03:49 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Quote:
Originally Posted by Geisha (Post 22402658)
Wait. Am I missing something? How do we know if Serena would be ahead of Maria by the time the YEC came around. She'd be getting #3 points not #2 points. Right?
This is why such recalculations donīt mean much. Had quality points been there this year, then rankings and draws would have been completely different. Itīs impossible to tell, how the year end rankings would have been looked like, as itīs impossible to retroactively redo the draws and replay matches that were never played. If WTA ever should bring quality points back, then for sure they would not recalculate the past results.

Nicolás89 Oct 29th, 2012 03:52 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Quote:
Originally Posted by Meelis (Post 22402696)
This is why such recalculations donīt mean much. Had quality points been there this year, then rankings and draws would have been completely different. Itīs impossible to tell, how the year end rankings would have been looked like, as itīs impossible to retroactively redo the draws and replay matches that were never played. If WTA ever should bring quality points back, then for sure they would not recalculate the past results.
Thread Closed.

Morning Morgan Oct 29th, 2012 03:57 PM
Re: Quality points & Ranking musings - 2012 Year End
 
This is some sort of the "best case" scenario calculation. For example, in the case for Serena, this is the maximum number of quality points she would have gotten this season. If the quality points system was implemented this year, she would have been most likely ranked higher at some point in time, and would have earned less quality points.

Patrick345 Oct 29th, 2012 04:06 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Different system. Same shit. Every system has flaws. Obviously the top ranked player cannot play against herself. Sheīll also get easier draws as a result of her ranking. Then you have the issue of the surface and injury factor. Is is really worth more to beat Wozniacki than Clijsters at the Australian Open? What about beating Radwanska instead of Errani at the French Open? What about beating Stosur at Wimbledon instead of Lisicki?

guichard Oct 29th, 2012 04:34 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Quote:
Originally Posted by Meelis (Post 22402696)
This is why such recalculations donīt mean much. Had quality points been there this year, then rankings and draws would have been completely different. Itīs impossible to tell, how the year end rankings would have been looked like, as itīs impossible to retroactively redo the draws and replay matches that were never played. If WTA ever should bring quality points back, then for sure they would not recalculate the past results.
Yeah but you know medias and fans love to whine about quality point. X player would have been ranked higher, junior are not progressing... While the fact is there is no way to truly know. Serious "publication" have done this kind of recaculation to prove their point about the "flawed current system". I know it doesn't make it right but...

guichard Oct 29th, 2012 04:35 PM
Re: Quality points & Ranking musings - 2012 Year End
 
Quote:
Originally Posted by Patrick345 (Post 22402769)
Different system. Same shit. Every system has flaws. Obviously the top ranked player cannot play against herself. Sheīll also get easier draws as a result of her ranking. Then you have the issue of the surface and injury factor. Is is really worth more to beat Wozniacki than Clijsters at the Australian Open? What about beating Radwanska instead of Errani at the French Open? What about beating Stosur at Wimbledon instead of Lisicki?
Or to take a ATP example, beating Murray on clay


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