This page explains how Mark Da Vee (USATT# 5226)'s rating went from 1952 to 1893 at the Sacramento Summer Open held on - 22 Aug 2009. 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.