This page explains how Teddy Y. Tong (USATT# 1532)'s rating went from 1419 to 1415 at the South Bay Table Tennis League event from 3 Nov 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.