This page explains how Xiaoyu Tong (USATT# 280308)'s rating went from 809 to 820 at the 2024 January Open @ Princeton Pong held on 6 Jan 2024 - 7 Jan 2024. 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.