2019 Challenger ATP Cachantún Cup

The 2019 Challenger ATP Cachantún Cup was a professional tennis tournament played on red clay courts. It was the 12th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Santiago, Chile between 4 and 10 March 2019.

Seeds

 * 1 Rankings are as of 25 February 2019.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇪🇸 Pablo Andújar
 * Gonzalo Lama
 * Bastián Malla
 * Víctor Núñez
 * Alejandro Tabilo

The following player received entry into the singles main draw using a protected ranking:
 * 🇦🇷 Facundo Mena

The following players received entry into the singles main draw using their ITF World Tennis Ranking:
 * 🇦🇷 Matías Franco Descotte
 * 🇧🇷 João Menezes
 * 🇧🇷 João Souza
 * 🇦🇷 Camilo Ugo Carabelli

The following players received entry from the qualifying draw:
 * 🇦🇷 Francisco Cerúndolo
 * 🇦🇷 Gonzalo Villanueva

Singles

 * 🇧🇴 Hugo Dellien def. Wu Tung-lin 5–7, 7–6(7–1), 6–1.

Doubles

 * 🇦🇷 Franco Agamenone / 🇧🇷 Fernando Romboli def. 🇦🇷 Facundo Argüello / Martín Cuevas 7–6(7–5), 1–6, [10–6].