This page explains how Teddy Y. Tong (USATT# 1532)'s rating went from 1531 to 1515 at the South Bay Table Tennis League event from 11 May 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.