This page explains how George Siu (USATT# 76618)'s rating went from 2013 to 1993 at the 2011 West Coast Spring Open held on - 24 Apr 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.