This page explains how Kelvin Lee (USATT# 216968)'s rating went from 1007 to 1006 at the Experior Club League event from 12 May 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.