This page explains how Alla Lantsman (USATT# 212702)'s rating went from 1561 to 1541 at the West Jersey Table Tennis Club League event from 18 Jul 2019. 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.