This page explains how Scott Harris (USATT# 9062)'s rating went from 1834 to 1821 at the 2015 Arnold Table Tennis Challenge held on - 8 Mar 2015. 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.