This page explains how Arthur Ryan (USATT# 95146)'s rating went from 1378 to 1360 at the Roslyn-Long Island Sports Center (LISC) League event from 21 Dec 2016. 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.