This page explains how Tak Cheong Ip (USATT# 30468)'s rating went from 2143 to 2140 at the Parma Heights Play and Eat Ope held on - 11 May 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.