This page explains how Haizhu Yang (USATT# 1171743)'s rating went from 2157 to 2151 at the Butterfly Spin &Smash April Open held on 1 Apr 2022 - 3 Apr 2022. 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.