This page explains how Ayman Ibrahim (USATT# 96623)'s rating went from 861 to 856 at the Long Island's Woodbury Table Tennis League event from 16 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.