This page explains how Ethan Zhou (USATT# 271061)'s rating went from 1904 to 1921 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.