This page explains how Mark Fondas (USATT# 5845)'s rating went from 1452 to 1458 at the Huntsman World Senior Games held on - 9 Oct 2015. 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.