20 Nov 2021 - 20 Nov 2021
This page explains how Jun Velasco (USATT# 1166473)'s rating went from 1651 to 1640 at the LATTA Butterfly Open November 2021 held on 20 Nov 2021 - 20 Nov 2021. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.