This page explains how Ethan He (USATT# 196903)'s rating went from 1175 to 1199 at the Topspin Open League event from 20 Sep 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.