This page explains how Andy Liu (USATT# 264276)'s rating went from 2029 to 2015 at the LYTTC Friday Pro League event from 27 Jan 2023. 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.