This page explains how Charles Bo Lianza (USATT# 7758)'s rating went from 1923 to 1915 at the 2005 State Games of America held on - 31 Jul 2005. 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.