This page explains how Lang Deng (USATT# 74203)'s rating went from 2158 to 2152 at the Swan Friday O2000 Team League event from 21 Jun 2013. 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.