This page explains how Kaili Yu (USATT# 215293)'s rating went from 1839 to 1819 at the Homenetmen Ararat Open held on 15 Jul 2017 - 16 Jul 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.