This page explains how Mohamad Alzein (USATT# 215073)'s rating went from 1886 to 1883 at the Experior Club League event from 15 Dec 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.