This page explains how Andy Chen (USATT# 1171562)'s rating went from 779 to 688 at the 2024 Sac Winter Open presented by Paddle Palace held on 27 Jan 2024 - 27 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.