This page explains how Nathan To (USATT# 221939)'s rating went from 1910 to 1897 at the 2023 Aurora Fall Open held on 25 Nov 2023 - 26 Nov 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.