This page explains how Jerry Zhang (USATT# 223480)'s rating went from 1945 to 1933 at the 2021 Butterfly Florida Open held on 23 Jul 2021 - 25 Jul 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.