This page explains how Paul Nguyen (USATT# 33336)'s rating went from 1671 to 1658 at the Orange County TTA Open held on 20 Aug 2016 - 21 Aug 2016. 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.