This page explains how Ann-ping Shangguan (USATT# 97927)'s rating went from 2196 to 2209 at the LYTTC Friday Pro League event from 1 Nov 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.