This page explains how Robert Treitel (USATT# 83210)'s rating went from 1153 to 1151 at the NASHUA TABLE TENNIS CLUB event from 23 Jul 2009. 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.