This page explains how Alla Lantsman (USATT# 212702)'s rating went from 1853 to 1838 at the West Jersey Table Tennis Club League event from 21 Oct 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.