This page explains how Ying Xin Fu (USATT# 86951)'s rating went from 1821 to 1817 at the 2015 Butterfly Atlanta Spring Open held on - 7 Feb 2015. 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.