This page explains how Henry E. Tiedeberg (USATT# 18820)'s rating went from 1055 to 1045 at the 2006 FL Open Sunburst Tour held on - 18 Nov 2006. 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.