This page explains how Mohamad Alzein (USATT# 215073)'s rating went from 1920 to 1917 at the Experior Club League event from 7 Jun 2019. 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.