This page explains how Roger Paul Haidvogel (USATT# 6361)'s rating went from 1848 to 1826 at the GVTTC Giant Round Robin held on - 15 Nov 2014. 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.