This page explains how Brett Chapel (USATT# 1180498)'s rating went from 1148 to 1158 at the NTTC August 12, 2023 League event from 12 Aug 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.