This page explains how Tim Yee (USATT# 74804)'s rating went from 1188 to 1177 at the AZ PTTC Wednesday event from 23 Feb 2011. 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.