This page explains how Howard Hai Vu (USATT# 10018)'s rating went from 1561 to 1481 at the NW LA Open held on - 19 Jan 2014. 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.