This page explains how Mark B Kraut (USATT# 7414)'s rating went from 1930 to 1929 at the Vegas Valley Over-40 Open held on 31 Mar 2016 - 3 Apr 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.