This page explains how Xiangfei Zeng (USATT# 219486)'s rating went from 2016 to 2043 at the 59th Butterfly St. Joseph Valley Open held on 16 Mar 2024 - 17 Mar 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.