This page explains how Kevin Mao (USATT# 271070)'s rating went from 1397 to 1372 at the HITTA Weekly League event from 11 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.