This page explains how Charles (Ying) Y. Xiong (USATT# 32947)'s rating went from 1783 to 1742 at the LYTTC Friday Pro League event from 5 May 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.