This page explains how Robert Treitel (USATT# 83210)'s rating went from 1587 to 1563 at the NASHUA TABLE TENNIS CLUB event from 22 Oct 2015. 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.