This page explains how Peter Liu (USATT# 276148)'s rating went from 1221 to 1218 at the Matchpoint TTC Friday League event from 19 Apr 2024. 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.