This page explains how Eric J. Ziegler (USATT# 88227)'s rating went from 1574 to 1550 at the Tucson Table Tennis Club League event from 19 Aug 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.