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.

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DateNameClubState/ProvinceCountrySport
2019-07-22NTTC 2019 Club Championships FinalsNTTCAUSTT
2019-07-22Loops Monday Night Season 5 Division 2 R7HWATTVICAUSTT
2019-07-22GVTTC Summer League ’19 Week08GVTTCNYUSATT
2019-07-22BTTA Fixtures Monday (22/07/2019)BTTAQLDAUSTT
2019-07-21CCTTA Competition 2 2019 - 2019-07-21CCTTAAUSTT
2019-07-212019 Vic Closed Senior ChmpionshipsTTVVICAUSTT
2019-07-212019 NSW Veterans Open ChampionshipsNSWVetsNSWAUSTT
2019-07-21Tournoi de Hardbat de Chatelet Corpo (BEL)HBBELHTT
2019-07-20Southern Table Tennis Rapid Fire July 2019STTSAAUSTT
2019-07-202019 Victorian Open VeteransTTVVictoriaAUSTT
2019-07-20Podvin Table Tennis TournamentMNUSATT
2019-07-202019 State Games of Oregon U/O 1250 SglPPCORUSATT
2019-07-20Minnesota Saturday OpenMNUSATT
2019-07-20TTW Saturday SinglesWWTTNew South WalesAUSTT
2019-07-202019 Rocky Mountain State GamesPPTTCCOUSATT
2019-07-20Série Hardbat du Tournoi d’Eté d’AnnecyHFFRAHTT
2019-07-202019 Iowa Summer Games Table Tennnis TournamentIAUSATT
2019-07-19VTTA Winter Round 6 2019VTTAVICAUSTT
2019-07-19Sate Games of Oregon 050 SglPPCORUSATT
2019-07-18Minnesota TC RRPTTMNUSATT
2019-07-18ES&CTTA 2019 Winter A1 Rnd 11ES&CTTAVICAUSTT
2019-07-18SDTTA 2019 Season 2 Pennant - Round 8SDTTAVICAUSTT
2019-07-182019 State Games of Oregon U/O 30 SglsPPCORUSATT
2019-07-18B1 Rnd 9 WTTA Winter 2019WTTAVictoriaAUSTT
2019-07-18Southern Table Tennis 2019 Winter Pennant Week 11STTSAAUSTT

TT = Table Tennis. HTT = Hardbat Table Tennis. STT = Sandpaper Table Tennis.
Events: 32,291. Players: 91,435. Matches: 3,564,442.