This page explains how Jun Velasco (USATT# 1166473)'s rating went from 1667 to 1663 at the LATTA Butterfly Open August 2023 held on 26 Aug 2023 - 26 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.