This page explains how Olivier Charlas (USATT# 230405)'s rating went from 1341 to 1340 at the MDTTC December Open held on 10 Dec 2022 - 11 Dec 2022. 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.