This page explains how Alan B. Pruce (USATT# 19698)'s rating went from 1796 to 1821 at the 2010 Chesapeake Open on the JOOLA NA Tour held on - 14 Mar 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.