2018 San Luis Open Challenger Tour

The 2018 San Luis Open Challenger Tour was a professional tennis tournament played on hard courts. It was the 25th edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in San Luis Potosí, Mexico between 27 March and 1 April 2018.

Seeds

 * 1 Rankings are as of 19 March 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇲🇽 Lucas Gómez
 * 🇲🇽 Tigre Hank
 * 🇲🇽 Gerardo López Villaseñor
 * 🇲🇽 Manuel Sánchez

The following players received entry from the qualifying draw:
 * 🇩🇴 Roberto Cid Subervi
 * 🇪🇨 Gonzalo Escobar
 * 🇩🇪 Kevin Krawietz
 * 🇧🇷 Pedro Sakamoto

Singles

 * Marcelo Arévalo def. 🇩🇴 Roberto Cid Subervi 6–3, 6–7(3–7), 6–4.

Doubles

 * Marcelo Arévalo / 🇲🇽 Miguel Ángel Reyes-Varela def. 🇬🇧 Jay Clarke / 🇩🇪 Kevin Krawietz 6–1, 6–4.