This page explains how Roger Keely (USATT# 12862)'s rating went from 1265 to 1504 at the 2015 Reno Winter Senior Games held on - 9 Feb 2015. 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.