This page explains how Rex Edward Joy (USATT# 17580)'s rating went from 1217 to 1266 at the LYTTC September Open held on - 15 Sep 2012. 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.