This page explains how Michael Hanna (USATT# 96621)'s rating went from 898 to 888 at the Long Island's Woodbury Table Tennis League event from 30 Jun 2015. 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.