This page explains how Zach Leifeste (USATT# 275514)'s rating went from 562 to 531 at the HITTA Weekly League event from 18 Nov 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.