This page explains how Donald Hinshaw (USATT# 32907)'s rating went from 2228 to 2199 at the 2023 Butterfly Teams Tournament held on 5 Aug 2023 - 6 Aug 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.