This page explains how Stephen Yatvitskiy (USATT# 94739)'s rating went from 1907 to 1989 at the 2021 Joola North American Team held on 26 Nov 2021 - 28 Nov 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.