This page explains how David Jinxuan Su (USATT# 268653)'s rating went from 1831 to 1803 at the LYTTC February Open 2023 held on 11 Feb 2023 - 12 Feb 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.