This page explains how Marvin Karno (USATT# 22332)'s rating went from 1328 to 1284 at the North-West LA Open held on - 15 Sep 2013. 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.