This page explains how Paul Sierra (USATT# 57913)'s rating went from 1821 to 1793 at the Ararat Open 2014 held on - 15 Jun 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.