This page explains how Bradley Robbins (USATT# 92461)'s rating went from 1280 to 1266 at the NASHUA TABLE TENNIS CLUB event from 21 May 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.