This page explains how Jiaying Mao (USATT# 275969)'s rating went from 321 to 322 at the PTTC Saturday League event from 30 Dec 2023. 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.