This page explains how Andy Chen (USATT# 1171562)'s rating went from 688 to 643 at the 888TTC SILICON VALLEY CHAMPIONSHIPS 2024 held on 17 Feb 2024 - 19 Feb 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.