This page explains how Sandeep Arneja (USATT# 926954)'s rating went from 1209 to 1201 at the Roslyn-Long Island Sports Center (LISC) League event from 25 May 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.