2023 Challenger AAT

The 2023 Challenger AAT was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Buenos Aires, Argentina between 24 and 30 April 2023.

Seeds

 * 1 Rankings are as of 17 April 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇦🇷 Alex Barrena
 * 🇦🇷 Alejo Lorenzo Lingua Lavallén
 * 🇦🇷 Lautaro Midón

The following players received entry into the singles main draw as alternates:
 * 🇧🇷 Pedro Boscardin Dias
 * Gonzalo Lama
 * 🇦🇷 Juan Bautista Otegui

The following players received entry from the qualifying draw:
 * 🇦🇷 Valerio Aboian
 * 🇦🇷 Tomás Farjat
 * 🇧🇷 Gustavo Heide
 * 🇵🇪 Conner Huertas del Pino
 * 🇦🇷 Mariano Kestelboim
 * 🇦🇷 Matías Zukas

The following players received entry as lucky losers:
 * 🇧🇷 Wilson Leite
 * 🇧🇷 José Pereira

Singles

 * 🇧🇷 Thiago Seyboth Wild def. 🇮🇹 Luciano Darderi 6–3, 6–3.

Doubles

 * 🇦🇷 Francisco Comesaña / 🇧🇷 Thiago Seyboth Wild def. 🇦🇷 Hernán Casanova / 🇦🇷 Santiago Rodríguez Taverna 6–3, 6–7(5–7), [10–6].