This page explains how Brian Chia (USATT# 30737)'s rating went from 2200 to 2199 at the Spttc Saturday Night League event from 7 Mar 2020. 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.