This page explains how Eldon Luo (USATT# 73147)'s rating went from 1954 to 1949 at the Houston Elite League event from 21 Sep 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.