This page explains how Sam Lawlace (USATT# 216144)'s rating went from 1410 to 1406 at the 2017 Rose City Holiday Classics held on 30 Dec 2017 - 31 Dec 2017. 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.