This page explains how Grant Zou (USATT# 271539)'s rating went from 1515 to 1477 at the Matchpoint TTC Friday League event from 25 Feb 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.