This page explains how Olivia Rosin (USATT# 216225)'s rating went from 1829 to 1777 at the 2024 HITTA President's Day Tournament held on 18 Feb 2024 - 18 Feb 2024. 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.