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
2020-01-192020 RTTC Tournament (January)RTTCAUSTT
2020-01-19OÖTTV Turniere 2019/2020, RCT3OÖTTVAUTTT
2020-01-19JomAktif Single Tournament 2020 - IntermediateJomAktifSelangorMASTT
2020-01-19OÖTTV Meisterschaft 2019/20 (Spiele KW 03/2020)OÖTTVAUTTT
2020-01-19BTTV-Meisterschaft (Spiele KW 03/2020)BTTVAUTTT
2020-01-19KTTV Meisterschaft (Spiele KW 03/2020)KTTVAUTTT
2020-01-19NÖTTV Meisterschaft und Cup (Spiele KW 03/2020)NÖTTVAUTTT
2020-01-19WTTV Meisterschaft und Cup (Spiele KW 03/2020)WTTVAUTTT
2020-01-19ÖTTV 1. Herren-Bundesliga 19/20 (KW 03/2020)ÖTTVAUTTT
2020-01-19ÖTTV 2. Damen-Bundesliga 19/20 (KW 03/2020)ÖTTVAUTTT
2020-01-19Intercup 2019/2020 (Spiele KW 03/2020)AUTTT
2020-01-19ÖTTV 1. Damen-Bundesliga 19/20 (KW 03/2020)ÖTTVAUTTT
2020-01-18TTW Saturday SinglesWWTTNew South WalesAUSTT
2020-01-18JomAktif Single Tournament 2020 - BeginnerJomAktifSelangorMASTT
2020-01-18Minnesota Saturday OpenTTMMNUSATT
2020-01-17Australian Olympic Qualifying Tournament - Stage 2TTAAUSTT
2020-01-16Minnesota TC RRPTTMNUSATT
2020-01-16TTW Thursday SinglesWWTTNew South WalesAUSTT
2020-01-15Sunshine & District TTA 2019 WED Xmas - Semi FinalSDTTAVICAUSTT
2020-01-15Rochester, MN Wednesday LeagueRTTCMNUSATT
2020-01-15GVTTC 2020 Wed Spring League Week 2GVTTCNYUSATT
2020-01-14Port Mac TuesdaysPMTTCNSWAUSTT
2020-01-14Minnesota TC RRPTTMNUSATT
2020-01-14GVTTC Classic League ’19’20’ Week 14GVTTCNYUSATT
2020-01-142019 Coburg Xmas Pennant January Week 2CoburgVICAUSTT

TT = Table Tennis. HTT = Hardbat Table Tennis. STT = Sandpaper Table Tennis.
Events: 33,950. Players: 93,966. Matches: 3,738,692.