This page explains how Yun Peng (USATT# 76263)'s rating went from 1504 to 1552 at the 2008 Washington Spring Champio held on - 13 Apr 2008. 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.