This page explains how Kevin Doyle (USATT# 1171074)'s rating went from 2004 to 2041 at the LYTTC Friday Pro League event from 30 Sep 2022. 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.