This page explains how Dave French (USATT# 20943)'s rating went from 1689 to 1649 at the DAC April Open 2017 held on 1 Apr 2017 - 2 Apr 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.