This page explains how Jonathan Chu (USATT# 57948)'s rating went from 2122 to 2100 at the LYTTC Friday Pro League event from 16 Jan 2015. 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.