This page explains how Warren Lee (USATT# 130612)'s rating went from 1502 to 1586 at the LATTA Butterfly Open November 2023 held on 18 Nov 2023 - 18 Nov 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.