This page explains how Brett Chapel (USATT# 1180498)'s rating went from 1146 to 1168 at the NTTC October 21st, 2023 league event from 21 Oct 2023. 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.