This page explains how Alla Lantsman (USATT# 212702)'s rating went from 1865 to 1853 at the West Jersey Table Tennis Club League event from 15 Jul 2021. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.