This page explains how Igor Falchuk (USATT# 95008)'s rating went from 2172 to 2145 at the 2023 USATT Illinois State Championships held on 9 Sep 2023 - 10 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.