This page explains how Brian D. Kilpatrick (USATT# 51092)'s rating went from 1409 to 1407 at the Lily Yip Table Tennis Center A held on - 21 Aug 2011. 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.