This page explains how RAYMOND D. SPANN (USATT# 10171)'s rating went from 1609 to 1599 at the Lakeland Table Tennis League event from 1 Feb 2007. 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.