Unseeded Leylah Fernandez defeated Viktorija Golubic in the final, 6–1, 6–4 to win the singles tennis title at the 2021 Monterrey Open. Fernandez did not drop a set en route to her first WTA Tour singles title.
Elina Svitolina was the reigning champion, but decided not to participate.
Seeds
Draw
Finals
Top half
Bottom half
Qualifying
Seeds
Qualifiers
Lucky losers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Fifth qualifier
Sixth qualifier
References
External links Main draw Qualifying draw