This page explains how Jim Tsung (USATT# 8408)'s rating went from 1889 to 1844 at the 2022 JOOLA North American Teams held on 25 Nov 2022 - 27 Nov 2022. 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.