This page explains how Ethan He (USATT# 196903)'s rating went from 1268 to 1275 at the Topspin Open League event from 2 Feb 2018. 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.