[4] Pacheco Méndez made his ATP debut at the 2022 Los Cabos Open in the main singles draw.

[4][3] For a third consecutive year, he received a wildcard for the main draw of the 2024 Los Cabos Open where he lost in the first round to the No.

589, following a quarterfinal showing at the 2024 GNP Seguros Tennis Open Challenger in Acapulco with wins over second seed Michael Mmoh and Nicolás Mejía.

585, he won the biggest title of his career defeating Bernard Tomic in the final of the M25 Xalapa in Mexico.

He reached the top 500 on 20 May 2024, climbing more than 120 positions up in the rankings, following another final showing as a wildcard, at the M15 Villahermosa also in Mexico.