This page explains how Joanna Sung (USATT# 82231)'s rating went from 2291 to 2293 at the 2023 TTA BUTTERFLY BAY AREA OPEN held on 1 Apr 2023 - 2 Apr 2023. 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.