2018 Monterrey Challenger

The 2018 Monterrey Challenger was a professional tennis tournament played on hard courts. It was the ninth edition of the tournament which was part of the 2018 [ATP Challenger Tour]. It took place in Monterrey, Mexico from 1 to 7 October 2018.

Singles main-draw entrants

¹ Rankings are as of 24 September 2018.

The following players received wildcards into the singles main draw:

The following player received entry into the singles main draw using a protected ranking:

The following players received entry from the qualifying draw:

The following player received entry as a lucky loser:

David Ferrer def. Ivo Karlović 6–3, 6–4.

Marcelo Arévalo / Jeevan Nedunchezhiyan def. Leander Paes / Miguel Ángel Reyes-Varela 6–1, 6–4.