This page explains how Peter Chung (USATT# 31990)'s rating went from 1573 to 1571 at the SVTTC Sunday U2000 event from 9 Oct 2011. 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.