This page explains how Louis R. Alamina (USATT# 20580)'s rating went from 1670 to 1673 at the 2021 Alamo City Open held on 27 Feb 2021 - 28 Feb 2021. 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.