This page explains how Grant G Connell (USATT# 5022)'s rating went from 1627 to 1628 at the TT&M Friday Night Butterfly League event from 2 Jul 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.