This page explains how Warren Lee (USATT# 130612)'s rating went from 1478 to 1489 at the LATTA Butterfly October Open 2022 held on 29 Oct 2022 - 29 Oct 2022. 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.