This page explains how Joe Fong (USATT# 271486)'s rating went from 1830 to 1809 at the NJTTC Tuesday V League event from 20 Jun 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.