This page explains how Nathan Zhong (USATT# 1167425)'s rating went from 1097 to 1080 at the 2021 US National TT Championships New York State Qualifier held on 17 Apr 2021 - 18 Apr 2021. 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.