This page explains how Mark J Arnold (USATT# 81189)'s rating went from 1865 to 1881 at the SATTC 2016 Summer Open held on 27 Aug 2016 - 28 Aug 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.