OOAK Table Tennis Forum

Hello everyone, I would like for you to share your national ranking points calculation systems (If you know how they work) and discuss pros/cons.

Few years ago after some discussion we've changed our calculation system to this one:


Anyone have similar one?
Most noticeable thing is that in this system looser only gets -half points of the winner. This way in general ranking points should always grow up, unless we make some adjustments after some time.

pros:
1) you must always compete in ranked events or you will fall behind. This way strongest must always prove themselves over and over again.
2) easy to understand, everyone can more or less calculate their rankings
3) few losses isn't such a big deal anymore (meaning you can loose to a player who has inconvenient style for you, and still go up in the ranking)

cons:
1) After a while it will be tough for a new player to move up on the ranking ladder to reach his real position in acceptable time span
I wonder if it helped if after an upset winner got way more points than they get now :/

Please share your ranking systems and your thoughts on this.

One more thing: Does having a global world ranking influence local country rankings in any way for that particular player?

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Setups (click on writings to read reviews):
1) Defence III / TSP P4 (0,5) / M3 (2,0)
2) Defence II / Joola Octopus (0,5) / M3 (2,0)
3) Ross Leidy "White Shadow" / P1R (1,3) / Hexer PS (1,7)

sorry can't do pdf lol but in NZ ours are like this and then some smaller events be be rated at .5 of this
Ratings Calculation Table:

Rating Difference
Normal Outcome
Upset Outcome
<25 +8 -8
<50 +7 -10
<100 +5 -12
<150 +3 -15
<200 +2 -20
<250 +1 -26
more 0 -32

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Blade Ulmo Duality| FH Tibhar mx-p Black, Dawei 388D-1 red OX
NZ table tennis selector, ask a question
My Blog here..How table tennis objects are made
Table Tennis abbreviations, and acronyms

What is the high and low end of the scale? Is it based on a max of 3000 or 4000?
Also what rating is considered high level play vs pro?

In the usatt we have a 3000 pt max.
Pros sit between 2600 - 2800... Some Chinese players only rate 2750ish because no one has a rating high enough for them to continuously compete here to gain pts 1 at a time.
If you are rated higher than 299 above your opponent you get nothing but they get 50 for beating you..
Our pt chart is at usatt.org

It's more complex. If you have enough "upset" victories the tournament director adjusts your rating accordingly.. Hence kids going from 1000 to 1800 in a year.

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-Teddy

But if I understand correctly in NZ winner and looser gets the same amount of points? for example winner gets +26 and looser -26

_________________
Setups (click on writings to read reviews):
1) Defence III / TSP P4 (0,5) / M3 (2,0)
2) Defence II / Joola Octopus (0,5) / M3 (2,0)
3) Ross Leidy "White Shadow" / P1R (1,3) / Hexer PS (1,7)

That's the thing at the moment lowest ranking is 0 (but you get listed in the ranking only after you accumulate 50+ points or win 5 times vs ranked players) and we have no max limit.
Have you got any idea, how this max-limit is applied? could there be a situation where 10 players had 3k points? Also, is there a link I could see the exact calculations table (with equations or something) ?


Since we only have ~1k active ranked players we can grade them like this (this is not official, just my personal opinion):
Tier 1: ranked 1-19 [1639 points to 1389], though first 10 are stronger, but many upsets may happen.
Tier 2: ranked 20-39 [1365 to 1145]
Tier 3: ranked 40-69 [1141 to 936]
Tier 4: ranked 70-150 [933 to 705]
Tier 5: ranked 151-300 [705 to 461]
Tier 6: ranked 301-500 [461 to 229]
Tier 7: have no idea how it goes for the rest till 1k

In general there is quite a big gap between the tiers, if you want to jump a tier you have to work hard in training and you really must step up your game a lot, but first 20 is years above everyone that are 40+
In most cases higher ranked tier should win quite comfortably, unless you've increased your level significantly.

I'd say pros are tier1, high level tier2-3 sometimes tier4

If I had to guess our tier2 would all be placed in top 110 in USA



I would love this idea, but at the moment it is sort of against the rules to change the ranking at the whim of your hand. Out rankings are global for every event: tournaments, leagues, national championships. It's just additionally we have a multiplier for the events: lets say national championships have a x2 multiplier used on the basic table points.

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Setups (click on writings to read reviews):
1) Defence III / TSP P4 (0,5) / M3 (2,0)
2) Defence II / Joola Octopus (0,5) / M3 (2,0)
3) Ross Leidy "White Shadow" / P1R (1,3) / Hexer PS (1,7)

Here's the Victorian one, they also keep records of all the national and interstate players on this one, the highest rated player is William Henzell on around 2300, 2400US level is about 1700-1800 Vic I guess



We also have similar divisions

Elite (mostly international players) 1850+ points (9 male players, 2 females)
Sub Elite 1600-1850 points (30 male players, 1 female)
Division One 1350-1500 points (84 male players, 10 females)
Division Two 1100-1350 points (146 male players, 13 females)
Division Three 850-1100 points (222 male players, 16 females)
Division Four 600-850 points (286 male players, 35 females)
Division Five 350-600 points (287 male players, 47 females)
Division Six under 350 points (305 male players, 58 females)
There's also a semi official Division Seven which is
Division Seven under 170 points I believe

Only maybe 1/3 of all players have a rating, mostly those that play in more active clubs or in tournaments

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Donic defplay senso
Haifu whale soft (grips-euro)
Nittaku pimplemini 1.0mm

Thanks Foam, looks very very similar to ours! Do you have a max-limit set or something? Also what is your personal opinion about your system? any pros/cons ?

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Setups (click on writings to read reviews):
1) Defence III / TSP P4 (0,5) / M3 (2,0)
2) Defence II / Joola Octopus (0,5) / M3 (2,0)
3) Ross Leidy "White Shadow" / P1R (1,3) / Hexer PS (1,7)

There's no max limit to the system but of course you can't go much higher than the nearest people under you. If there were 50 players between 2000 and 2300 level, you would see players making higher numbers but there are only 2 players in the state over 2200. Yes there are some problems with it, mostly it's not able to keep up with rapidly improving players, I think the pennant weighting needs to be worth more points for starters but it does work OK. I'd say practically everyone in Division 2 is above the US2000 and some players in Division 3 also. Division 1 and above are higher level again

I'll add the amount of players in each division

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Donic defplay senso
Haifu whale soft (grips-euro)
Nittaku pimplemini 1.0mm

your one is the same as ours but we don't the same weightings for events, the strangest thing I see in yours where a round robin win is a .4 of the normal knockout stage, very strange when its person against person in the same event so why a lower have it weighted so much less

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Blade Ulmo Duality| FH Tibhar mx-p Black, Dawei 388D-1 red OX
NZ table tennis selector, ask a question
My Blog here..How table tennis objects are made
Table Tennis abbreviations, and acronyms

You will find the U.S. process here:
http://www.usatt.org/ratings/ratingsprocess.html

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"The greatest teacher, failure is"
USATT Rating: 1725
Blade: Stiga Cybershape Carbon
FH Rubber: Butterfly Tenergy 19 2.1
BH Rubber: Dr Neubauer ABS3 1.5

hmmm the part where the looser looses half of what the winner gains( or in or around that) sounds a bit familiar... if anyone has heard of Starcaft 2? they use a similar system and the system encourages high level of competitiveness and helps wean off the lower skilled palyers towards the bottom end of the spectrum and the ones with actual skill tend to promote themselves to the top fairly swiftly, with either none or very little loses untill they meet the other higher ended players..

as for the players between two tiers( lets say gold and silver- silver being lower tier( kinda like a range of rating 2000-3000) the lower players from the higher tier are to play those in the top end of the lower tier. if they loose too much they drop in tier/rating range. then vise versa for the lower tier they get promoted up and get to play with the higher tiered players and proceed to where their developement takes them

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my youtube channel
http://www.youtube.com/user/decoyla?feature=mhum

Main: / secondary / LP
Blade: DHS Hurricane hao/ Blade- Hurricane Hao 2
FH: Skyline 3(Blue Sponge)/ FH- Nittaku H3 pro
BH: Omega Asia/ BH- Calibra Tour H

http://etta.co.uk/players/rankings-info ... nts-table/

http://etta.tv/wp-content/uploads/2010/ ... n_2010.pdf

This is the English ranking system. The only problem is in banded tournaments where you get bandits who aren't on the ranking list. Another problem is that I never seem to go up it.

Thanks guys for the useful links and participation

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Setups (click on writings to read reviews):
1) Defence III / TSP P4 (0,5) / M3 (2,0)
2) Defence II / Joola Octopus (0,5) / M3 (2,0)
3) Ross Leidy "White Shadow" / P1R (1,3) / Hexer PS (1,7)

That doesn't actually happen in the round robins before a knockout, it must mean for tournaments that are started and ended in round robin, say if you only had 3 entries

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Donic defplay senso
Haifu whale soft (grips-euro)
Nittaku pimplemini 1.0mm