This page explains how Geoffrey Cheng (USATT# 91967)'s rating went from 2187 to 2219 at the LYTTC Friday Pro League event from 6 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.