This page explains how Robert Treitel (USATT# 83210)'s rating went from 1298 to 1309 at the NASHUA TABLE TENNIS CLUB event from 8 Sep 2011. 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.