This page explains how Robert Treitel (USATT# 83210)'s rating went from 1355 to 1319 at the NASHUA TABLE TENNIS CLUB event from 28 Apr 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.