This page explains how Fiona Dubina (USATT# 214975)'s rating went from 481 to 633 at the Spin and Smash Summer Open held on 16 Aug 2019 - 18 Aug 2019. 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.