This page explains how Vitaliy Plugovoy (USATT# 140020)'s rating went from 2009 to 1989 at the Central Carolinas Super League event from 10 Oct 2019. 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.