This page explains how Evelyn Ma (USATT# 272060)'s rating went from 1861 to 1844 at the LYTTC Friday Pro League event from 19 Jan 2024. 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.