This page explains how Eric Zheng (USATT# 35038)'s rating went from 1756 to 1807 at the 2009 Spinmania held on - 6 Sep 2009. 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.