| Singles | |
|---|---|
| 2024 Zadar Open | |
| Champion |  Jozef Kovalík |
| Runner-up |  Adrian Andreev |
| Score | 6–4, 6–2 |
Alessandro Giannessi was the defending champion [1] but lost in the second round to Timofey Skatov.
Jozef Kovalík won the title after defeating Adrian Andreev 6–4, 6–2 in the final.
Dominic Thiem (second round)
Corentin Moutet (first round)
Zsombor Piros (second round) Filip Misolic (first round, retired)
Dino Prižmić (second round)
Stefano Travaglia (second round) Matteo Martineau (first round)
Nerman Fatić (first round)| Semifinals | Final | ||||||||||||
| Q |  Jonáš Forejtek | 4 | 3 | ||||||||||
| Jozef Kovalík | 6 | 6 | |||||||||||
| Jozef Kovalík | 6 | 6 | |||||||||||
| Adrian Andreev | 4 | 2 | |||||||||||
| Adrian Andreev | 6 | 6 | |||||||||||
 Timofey Skatov | 3 | 4 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | D Thiem | 6 | 77 | ||||||||||||||||||||||||
| WC |  F Krajinović | 2 | 64 | 1 | D Thiem | 2 | 1 | ||||||||||||||||||||
| Q | Mathys Erhard | 3 | 2 | L Neumayer | 6 | 6 | |||||||||||||||||||||
| L Neumayer | 6 | 6 | L Neumayer | 3 | 6 | 4 | |||||||||||||||||||||
| Q |  O Krutykh | 1 | 7 | 2 | Q | J Forejtek | 6 | 1 | 6 | ||||||||||||||||||
| Q | J Forejtek | 6 | 5 | 6 | Q | J Forejtek | 710 | 0 | 6 | ||||||||||||||||||
| Alt | M Vrbenský | 1 | 2 | 5 | D Prižmić | 68 | 6 | 4 | |||||||||||||||||||
| 5 | D Prižmić | 6 | 6 | Q | J Forejtek | 4 | 3 | ||||||||||||||||||||
| 3 | Z Piros | 77 | 6 | J Kovalík | 6 | 6 | |||||||||||||||||||||
| Alt |  D Michalski | 60 | 2 | 3 | Z Piros | 6 | 64 | 3 | |||||||||||||||||||
| J Kovalík | 6 | 6 | J Kovalík | 0 | 77 | 6 | |||||||||||||||||||||
| Q | E Furness | 0 | 2 | J Kovalík | 3 | 6 | 77 | ||||||||||||||||||||
| Z Kolář | 6 | 64 | 6 | WC | N Serdarušić | 6 | 3 | 64 | |||||||||||||||||||
| R Bonadio | 4 | 77 | 3 | Z Kolář | 6 | 3 | 2 | ||||||||||||||||||||
| WC | N Serdarušić | 6 | 6 | WC | N Serdarušić | 2 | 6 | 6 | |||||||||||||||||||
| 7 | M Martineau | 3 | 1 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | S Travaglia | 6 | 6 | ||||||||||||||||||||||||
| C Tabur | 4 | 1 | 6 | S Travaglia | 1 | 4 | |||||||||||||||||||||
| Q | Arthur Gea | 2 | 6 | 4 | E Dalla Valle | 6 | 6 | ||||||||||||||||||||
| Enrico Dalla Valle | 6 | 3 | 6 | E Dalla Valle | 6 | 4 | 2 | ||||||||||||||||||||
| M Guinard | 1 | 4 | A Andreev | 3 | 6 | 6 | |||||||||||||||||||||
| A Andreev | 6 | 6 | A Andreev | 6 | 4 | 6 | |||||||||||||||||||||
| WC | M Dodig | 77 | 5 | WC | M Dodig | 4 | 6 | 1 | |||||||||||||||||||
| 4 | F Misolic | 62 | 2r | A Andreev | 6 | 6 | |||||||||||||||||||||
| 8 | N Fatić | 0 | 65 | T Skatov | 3 | 4 | |||||||||||||||||||||
| D Kuzmanov | 6 | 77 | D Kuzmanov | 67 | 2 | ||||||||||||||||||||||
| F Maestrelli | 2 | 63 | Q | S Kopp | 79 | 6 | |||||||||||||||||||||
| Q | Sandro Kopp | 6 | 77 | Q | S Kopp | 6 | 3 | 4 | |||||||||||||||||||
| D Novak | 65 | 77 | 1 | T Skatov | 4 | 6 | 6 | ||||||||||||||||||||
| T Skatov | 77 | 65 | 6 | T Skatov | 6 | 6 | |||||||||||||||||||||
| A Giannessi | 5 | 6 | 6 | A Giannessi | 1 | 2 | |||||||||||||||||||||
| 2 | C Moutet | 7 | 2 | 4 | |||||||||||||||||||||||
Juan Ignacio Chela was the defending champion but was eliminated in the semifinals by Pablo Andújar.
Florian Mayer won the title, defeating Pablo Andújar 6–3, 6–1 in the final.
Defending champion David Ferrer defeated Fernando Verdasco in the final, 6–1, 6–2 to win the men's singles tennis title at the 2012 Mexican Open.
Robin Söderling was the defending champion, but withdrew due to illness.
David Ferrer won the title, defeating Nicolás Almagro 6–2, 6–2 in the final.
Gilles Simon was the defending champion, but lost in the second round to Tommy Haas.
Haas went to the final, but lost to Juan Mónaco 5–7, 4–6.
Andrey Kuznetsov was the defending champion but chose to compete at the 2013 Portugal Open.
Potito Starace was leading Alessandro Giannessi 6–2, 2–0 in the final before Giannessi retired.
Juan Mónaco was the defending champion, but lost to Ivo Karlović in the quarterfinals.
Roger Federer was the defending champion, but chose not to participate this year.
Ričardas Berankis was the defending champion but chose not to defend his title.
Alexandr Dolgopolov defeated Kei Nishikori in the final, 7–6(7–4), 6–4 to win the singles tennis title at the 2017 Argentina Open.
Pablo Cuevas was the two-time defending champion and successfully defended his title, defeating Albert Ramos Viñolas in the final, 6–7(3–7), 6–4, 6–4.
This was the first edition of the tournament.
Alessandro Giannessi was the defending champion but lost in the first round to Artem Smirnov.
Víctor Estrella Burgos was the three-time defending champion and the tournament's only champion to date, but lost in the second round to Gerald Melzer.
Alexandr Dolgopolov was the defending champion, but withdrew before the tournament began.
This was the first edition of the tournament.
Fabio Fognini was the defending champion, but chose not to defend his title.
John Peers and Michael Venus were the defending champions, but Peers chose not to participate this year.
Carlos Alcaraz defeated Richard Gasquet in the final, 6–2, 6–2 to win the singles tennis title at the 2021 Croatia Open. It was his first ATP Tour title. With the victory, Alcaraz became the youngest player to win an ATP Tour title since Kei Nishikori at the 2008 Delray Beach International Tennis Championships.
Gastão Elias was the two-time defending champion and successfully defended his title, defeating Alessandro Giannessi 7–6(7–4), 6–1 in the final.
Alessandro Giannessi was the defending champion but chose not to defend his title.