This page explains how Alvin Kong (USATT# 27823)'s rating went from 1599 to 1579 at the SMC PROF. JO KIDD MEMORIAL TOURNAMENT held on 19 Nov 2023 - 19 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.