This page explains how Xiaocong(Peter) Guo (USATT# 16855)'s rating went from 1813 to 1828 at the 2004 Bellevue Spring Open held on - 25 Apr 2004. 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.