Official Ratings/Rankings of ÖTTV, NÖTTV, STTV, KTTV, BTTV, TTTV, StTTV, WTTV, VTTV, OÖTTV, TTQ, TTSA, TTTA, TTV, and ELTTL.
Ratings Central: The World’s Most Accurate Rating System
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Welcome!

Welcome to Ratings Central, home of the world’s most accurate rating system!


On June 1, 2019, we modified the temporal-update algorithm and reprocessed all events. Everyone’s rating changed. All historical ratings changed.

Previously, if the rating system had not seen a player for a year, the standard deviation of the player’s law increased by at most 70 points.

With the new algorithm, if the rating system has not seen a player for a year, the standard deviation of the player’s law will increase by at most 79.4 points and the mean will increase by 7 points. However, the increase in mean will not be credited until the player plays in an event. (The new temporal-update is the sum of a mean-zero normal random walk with a variance of 70² per year and a Poisson jump process with jumps of 200 points, a mean of 7 points per year, and a variance of 200 × 7 per year.)

With the new model, players sometimes get better in jumps, while before they only got better in steps.

When we reprocessed all events, the ratings of 99.99% of the players increased or stayed the same. The average gain was 42 points. Only 0.02% of players gained more than 300 points.

We were motivated to consider improvements to the algorithm by a major event director who felt that the ratings for their players were deflating. After a year of experimentation and investigation, we concluded that part of the deflation was due to their choice of priors. However, even after using better priors, there still appeared to be some deflation. A related problem is that sometimes the system can be slow to react when a player improves rapidly. We think the new temporal-update algorithm better models how player playing strengths actually change and produces more accurate ratings.


On May 26, 2019, we added new categories of examples to Examples of Point Changes.

For more information on Ratings Central, including how your club, league, or tournament can join, see Info. And, be sure to take a look at what people are saying about Ratings Central.

If you run tournaments, take a look at Zermelo. Zermelo can help you run your tournament and submit it to Ratings Central or USATT, or can be used without using Ratings Central.

Recent Events
DateNameClubState/ProvinceCountrySport
2020-03-232020 SNDTTA Autumn - 2020-03-23SNDTTAAUSTT
2020-03-21TTW Saturday SinglesWWTTNew South WalesAUSTT
2020-03-19TTW Thursday SinglesWWTTNew South WalesAUSTT
2020-03-18NTTC 2020 Autumn Comp A Grade R4NTTCAUSTT
2020-03-182020 TTG Summer Comp Week 6TTGNSWAUSTT
2020-03-18BDTTA 2019/20 Summer Pennant A Semi FinalBDTTAVicAUSTT
2020-03-17Port Mac TuesdaysPMTTCNSWAUSTT
2020-03-17NTTC 2020 Autumn Comp B/R Grade R4NTTCAUSTT
2020-03-17BDTTA 2019/20 Summer Pennant B R18BDTTAVicAUSTT
2020-03-17AWTTA 2020 Summer Div 1 Rd 6AWTTAVICAUSTT
2020-03-162020 SNDTTA Autumn - 2020-03-16SNDTTAAUSTT
2020-03-16TTW Monday SinglesWWTTNew South WalesAUSTT
2020-03-16Sunshine & District TTA 2020 Mon S1 - Round 6SDTTAVICAUSTT
2020-03-16NTTC 2020 Autumn Comp A/R Grade R4NTTCAUSTT
2020-03-16AWTTA 2020 Summer Div 3 Rd 6AWTTAVICAUSTT
2020-03-16NTTTA Autumn 2020 Round 5NorthernAUSTT
2020-03-15CCTTA Competition 1 2020 - 2020-03-15CCTTAAUSTT
2020-03-15OÖTTV Meisterschaft 2019/20 (Spiele KW 11/2020)OÖTTVAUTTT
2020-03-15KTTV Meisterschaft (Spiele KW 11/2020)KTTVAUTTT
2020-03-15NÖTTV Meisterschaft und Cup (Spiele KW 11/2020)NÖTTVAUTTT
2020-03-15StTTV Meisterschaft (Spiele KW 11/2020)StTTVAUTTT
2020-03-15STTV Meisterschaft (Spiele KW 11/2020)STTVAUTTT
2020-03-15VTTV Meisterschaft und Cup (Spiele KW 11/2020)VTTVAUTTT
2020-03-15WTTV Meisterschaft und Cup (Spiele KW 11/2020)WTTVAUTTT
2020-03-15Waterfall Way CupArmidale TTCNew South WalesAUSTT

TT = Table Tennis. HTT = Hardbat Table Tennis. STT = Sandpaper Table Tennis.
Events: 34,486. Players: 94,515. Matches: 3,784,992.