This page explains how Olivier Charlas (USATT# 230405)'s rating went from 1247 to 1340 at the Richmond TTC Weekly League event from 4 Aug 2021. 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.