This page explains how Katie Chen (USATT# 85071)'s rating went from 2079 to 2051 at the LYTTC Friday Pro League event from 31 Aug 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.