2019 San Luis Open Challenger Tour
The 2019 San Luis Open Challenger Tour was a professional tennis tournament played on hard courts. It was the 26th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in San Luis Potosí, Mexico between 15 and 21 April 2019.Seeds
- 1 Rankings are as of 8 April 2019.
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using a protected ranking:
The following players received entry into the singles main draw as alternates:
The following players received entry into the singles main draw using their ITF World Tennis Ranking:
The following players received entry from the qualifying draw:
Singles
