This page explains how Kelvin Lee (USATT# 216968)'s rating went from 1158 to 1142 at the Experior Club League event from 28 Jul 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.