This page explains how John Yoon (USATT# 12659)'s rating went from 1878 to 1876 at the Experior Club League event from 16 Oct 2021. 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.