This page explains how Alan Tang (USATT# 81663)'s rating went from 2185 to 2172 at the 2022 US National TT Championships California State Qualifier held on 25 Mar 2022 - 27 Mar 2022. 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.