This page explains how Isabella Maria Joseph (USATT# 271344)'s rating went from 1636 to 1571 at the 2024 Butterfly Houston Lunar New Year Tournament held on 3 Feb 2024 - 3 Feb 2024. 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.