This page explains how Jocelyn Zhang (USATT# 1179059)'s rating went from 20 to 12 at the HITTA Weekly League event from 24 Jun 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.