This page explains how Jinglin Hu (USATT# 1175881)'s rating went from 668 to 860 at the Westchester December 2022 Open held on 29 Dec 2022 - 30 Dec 2022. 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.