This page explains how Cyndi (Xuxin) Zhang (USATT# 96337)'s rating went from 452 to 455 at the PTTC Saturday League event from 14 May 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.