This page explains how William Huang (USATT# 279401)'s rating went from 909 to 903 at the 2014 Butterfly MDTTC August Open held on - 24 Aug 2014. 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.