This page explains how Angelo Gandullia (USATT# 80399)'s rating went from 1959 to 1977 at the 2011 Top Spin Spring Open held on - 30 Apr 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.