Results
| Challenger Guayaquil | 11/18 23:55 | 25 | Emilio Camacho v Alvaro Guillen Meza | 2-6,3-6 | |
| Challenger Montevideo | 11/13 17:00 | 26 |
[200] Alvaro Guillen Meza v
Adolfo Daniel Vallejo
[169] 
|
6-2,3-6,4-6 | |
| Challenger Montevideo | 11/11 21:40 | 25 |
[45] Sebastian Baez
v
Alvaro Guillen Meza [200] |
6-7,4-6 | |
| Challenger Lima 2 | 11/08 18:30 | 28 |
[122] Sportivo Trinidense Reserves
v
Alvaro Guillen Meza [213] |
6-2,7-5 | |
| Challenger Lima 2 | 11/07 22:10 | 27 |
[105] Roman Andres Burruchaga
v
Alvaro Guillen Meza [213] |
7-6,2-6,5-7 | |
| Challenger Lima 2 | 11/05 23:55 | 26 | [278] Nicolas Kicker v Alvaro Guillen Meza [213] | 6-4,5-7,4-6 | |
| Challenger Lima 2 | 11/04 15:00 | 25 |
[213] Alvaro Guillen Meza v
Tristan Boyer
[145] 
|
1-6,6-2,6-4 | |
| Challenger Lima | 11/01 20:45 | 28 |
[86] Mariano Navone
v
Alvaro Guillen Meza [236] |
6-4,6-1 | |
| Challenger Lima | 10/31 23:30 | 27 |
[110] Ignacio Buse
v
Alvaro Guillen Meza [236] |
2-6,6-4,3-6 | |
| Challenger Lima | 10/30 17:00 | 26 | [236] Alvaro Guillen Meza v Andres Andrade [283] | 6-2,6-2 | |
| Challenger Lima | 10/28 23:00 | 25 |
[217] Phoenix Sports
v
Alvaro Guillen Meza [236] |
Retired | |
| Challenger Curitiba | 10/14 18:30 | 25 |
[233] Facundo Diaz Acosta
v
Alvaro Guillen Meza [201] |
7-5,6-1 |
Wikipedia - Álvaro Guillén Meza
Álvaro Guillén Meza (born 2 January 2003) is an Ecuadorian tennis player. He has a career high ATP singles ranking of world No. 175 achieved on 9 June 2025 and a doubles ranking of No. 400 achieved on 22 July 2024. He is currently the No. 1 Ecuadorian tennis player.
Guillén Meza represents Ecuador at the Davis Cup, where he has a W/L record of 1–1.
History
2023: Maiden Challenger title
At 20 years old, Guillén Meza won his maiden Challenger title at the 2023 Lima Challenger. He became the youngest Ecuadorian champion since Giovanni Lapentti in 2003.
2024: Second Challenger title
Guillén Meza won his second Challenger title at the 2024 Ibagué Open, defeating Facundo Mena in the final.
2025: ATP Tour debut
In May, Guillén Meza claimed his third Challenger title at the 2025 Santos Brasil Tennis Cup, overcoming Matheus Pucinelli de Almeida in the final. As a result he reached the top 200 at world No. 180 on 19 May 2025.
In July, Guillén Meza made his ATP Tour debut as a qualifier at the Croatia Open. He lost to Stan Wawrinka in the first round.