This page explains how Justin J. Liu (USATT# 271241)'s rating went from 1999 to 2023 at the 2024 Butterfly Puerto Rico Teams Open held on 12 Apr 2024 - 14 Apr 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.