This page explains how David Oh (USATT# 137970)'s rating went from 1191 to 1188 at the Table Tennis Club at UH Manoa (TTCatUHM) event from 11 Jan 2010. 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.