This page explains how Angelo Gandullia (USATT# 80399)'s rating went from 1940 to 1934 at the Top Spin Thursday League event from 27 Jan 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.