This page explains how Charles (Ying) Y. Xiong (USATT# 32947)'s rating went from 1901 to 1848 at the NJTTC Thursday Adv League event from 7 Dec 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.