This page explains how Richard Lee (USATT# 54845)'s rating went from 2424 to 2427 at the Butterfly MDTTC October Open held on - 21 Oct 2012. 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.