This page explains how Ralph C. Bockoven (USATT# 4312)'s rating went from 2026 to 2021 at the MATTBC September 2014 Open held on - 27 Sep 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.