This page explains how Diann Darnall (USATT# 33603)'s rating went from 1442 to 1564 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.