This page explains how Xiangfei Zeng (USATT# 219486)'s rating went from 1716 to 1812 at the Butterfly Spin & Smash August Open held on 6 Aug 2021 - 8 Aug 2021. 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.