This page explains how Dennis M. Spellman (USATT# 10185)'s rating went from 1581 to 1475 at the West Jersey Table Tennis Club League event from 16 Aug 2018. 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.