This page explains how Yaopeng Sun (USATT# 220832)'s rating went from 1820 to 1816 at the HITTA Weekly League event from 4 Jun 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.