This page explains how Nidal Ilyas (USATT# 223530)'s rating went from 1196 to 1146 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 1 Feb 2020. 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.