Erie TTC Members & Ratings - Erie Table Tennis Club
Another Rating System Much More Accurate Than the ITTF World Ranking | TableTennisDaily
Table Tennis Rating Calculator by Micaiah Skolnick
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Club Rating - Archi's Table Tennis Club (ATTC)
Tennis Elo
GitHub - pingpongboss/Table-Tennis-Ratings-Server: Google AppEngine backed server that exposes an API for looking up player ratings on USATT or RatingsCentral.