This page explains how Joe Yuan (USATT# 90498)'s rating went from 1520 to 1493 at the SVTTC Sunday U2000 event from 12 Jan 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.