This page explains how Lia Morales (USATT# 1170878)'s rating went from 1911 to 1890 at the HITTA Weekly League event from 20 Oct 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.