This page explains how George Siu (USATT# 76618)'s rating went from 2179 to 2162 at the Swan Friday O2000 Team League event from 15 Feb 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.