This page explains how Crystal Wang (USATT# 77897)'s rating went from 2031 to 2009 at the 2011 Potomac Spring Open held on - 15 May 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.