This page explains how Sameh Awadallah (USATT# 88308)'s rating went from 2500 to 2507 at the Roslyn-Long Island Sports Center (LISC) League event from 23 Jun 2017. 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.