This page explains how Ayman Ibrahim (USATT# 96623)'s rating went from 1421 to 1387 at the Glen Head Table Tennis Center Saturday Night League event from 14 Jul 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.