This page explains how Michael Li (USATT# 73467)'s rating went from 1851 to 1818 at the 2010 Potomac Spring Open held on - 16 May 2010. 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.