This page explains how Vadim Fedin (USATT# 229603)'s rating went from 2110 to 2062 at the LATTA Butterfly September Open 2022 held on 24 Sep 2022 - 24 Sep 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.