This page explains how Randy Spizer (USATT# 146221)'s rating went from 1581 to 1550 at the Long Beach Table Tennis League event from 14 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.