This page explains how Brian Chia (USATT# 30737)'s rating went from 1615 to 1638 at the Bill Mason Memorial Open held on - 7 Apr 2007. 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.