This page explains how Ethan He (USATT# 196903)'s rating went from 1438 to 1440 at the LYTTC Friday Pro League event from 27 Jan 2023. 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.