This page explains how David Yifeng Xu (USATT# 1174699)'s rating went from 1867 to 2026 at the 2024 Butterfly SPTTC February Open held on 3 Feb 2024 - 4 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.