This page explains how Brian Chia (USATT# 30737)'s rating went from 1986 to 2007 at the 2018 SPTTC March Open held on 3 Mar 2018 - 4 Mar 2018. 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.