This page explains how Joe Zhang (USATT# 1165421)'s rating went from 2082 to 2061 at the Silicon Valley Fall Championships 2023 held on 2 Sep 2023 - 4 Sep 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.