This page explains how TaeEun Jun (USATT# 267860)'s rating went from 1222 to 1119 at the LATTA Butterfly Open April 2023 held on 29 Apr 2023 - 29 Apr 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.