This page explains how Omar Villarreal (USATT# 1177299)'s rating went from 1617 to 1609 at the 2024 Austin New Year Giant Round Robin held on 27 Jan 2024 - 27 Jan 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.