This page explains how Chris Mosio (USATT# 28893)'s rating went from 1983 to 2026 at the LYTTC Friday Pro League event from 13 Sep 2014. 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.