This page explains how Glenn Ackerman (USATT# 81539)'s rating went from 1184 to 1180 at the Long Island's Woodbury Table Tennis League event from 17 Jun 2014. 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.