This page explains how Basil C Ibegbu (USATT# 74880)'s rating went from 2005 to 1998 at the Top Spin Open 2010 held on - 6 Nov 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.