This page explains how Nicholas T Flor (USATT# 11358)'s rating went from 662 to 652 at the 2011 March Philadelphia Open held on - 13 Mar 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.