This page explains how Peter Duchene (USATT# 279296)'s rating went from 1030 to 1021 at the Central Carolinas Super League event from 17 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.