This page explains how Lennox Douglas (USATT# 3212)'s rating went from 2129 to 2108 at the Trolley Car Table Tennis Club Philly Open August 2012 held on - 12 Aug 2012. 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.