This page explains how Mark Johnson (USATT# 26863)'s rating went from 1748 to 1742 at the 2017 Xiom August Open held on 25 Aug 2017 - 27 Aug 2017. 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.