This page explains how Mario Lorenc (USATT# 51434)'s rating went from 1907 to 1897 at the Best of the West Open held on - 2 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.