This page explains how Jayden Zhou (USATT# 88299)'s rating went from 1903 to 1891 at the LYTTC Friday Pro League event from 2 Dec 2014. 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.