This page explains how David Oh (USATT# 137970)'s rating went from 1055 to 1042 at the Table Tennis Club at UH Manoa (TTCatUHM) event from 17 Sep 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.