This page explains how Lex Lacson (USATT# 269408)'s rating went from 477 to 372 at the ICC - Sunday Beginners League event from 25 Jul 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.