This page explains how Christine Cha (USATT# 218348)'s rating went from 1179 to 1525 at the Westchester 2021 December Open held on 29 Dec 2021 - 30 Dec 2021. The links below take you to pages that describe various aspects of the ratings processor.

The ratings 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.