This page explains how Ron Pieper (USATT# 199014)'s rating went from 1278 to 1261 at the Rose City Table Tennis League held on 27 May 2017 - 27 May 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.