This page explains how Irvin Martin (USATT# 71560)'s rating went from 1680 to 1689 at the 2019 XIOM Cary Cup held on 28 Mar 2019 - 31 Mar 2019. 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.