This page explains how William Englebreth (USATT# 32547)'s rating went from 1228 to 1217 at the Central Carolinas Super League event from 10 Dec 2009. 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.