This page explains how Lavone Horne (USATT# 22145)'s rating went from 1549 to 1489 at the Central Florida Winter Open held on - 23 Feb 2008. 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.