This page explains how Jiadong Xu (USATT# 281738)'s rating went from 1830 to 1814 at the SportsFest XVIII held on - 19 Jul 2014. 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.