This page explains how Ralph C. Bockoven (USATT# 4312)'s rating went from 2178 to 2172 at the Boston TTC event from 2 Jul 2019. 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.