This page explains how Zhuangjie Li (USATT# 70481)'s rating went from 1920 to 1890 at the Long Beach Table Tennis League event from 24 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.