This page explains how Kevin Mao (USATT# 271070)'s rating went from 1667 to 1664 at the 2024 USATT Southwest Regional Championships held on 10 May 2024 - 12 May 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.