This page explains how Joseph Forro (USATT# 38011)'s rating went from 1300 to 1192 at the 10th Annual Holiday Classic 'Team' & Top Gun Singles Open held on - 17 Jan 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.