| Singles | |
|---|---|
| 2024 Garden Open | |
| Champion |  Alejandro Moro Cañas |
| Runner-up |  Vilius Gaubas |
| Score | 7–5, 6–3 |
Sumit Nagal was the defending champion [1] but chose not to defend his title.
Alejandro Moro Cañas won the title after defeating Vilius Gaubas 7–5, 6–3 in the final.
Zsombor Piros (first round)
Nicolas Moreno de Alboran (quarterfinals)
Juan Manuel Cerúndolo (second round)
Jozef Kovalík (second round)
Jesper de Jong (quarterfinals)
Hugo Grenier (first round)
Andrea Pellegrino (first round)
Hugo Dellien (semifinals)| Semifinals | Final | ||||||||||||
| Alt | Alejandro Moro Cañas | 6 | 64 | 6 | |||||||||
| Stefano Travaglia | 3 | 77 | 2 | ||||||||||
| Alt | Alejandro Moro Cañas | 7 | 6 | ||||||||||
| Q | Vilius Gaubas | 5 | 3 | ||||||||||
| 8 | Hugo Dellien | 4 | 5 | ||||||||||
| Q | Vilius Gaubas | 6 | 7 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Z Piros | 4 | 3 | ||||||||||||||||||||||||
| Alt | A Moro Cañas | 6 | 6 | Alt | A Moro Cañas | 61 | 6 | 6 | |||||||||||||||||||
| Q | Ryan Nijboer | 6 | 3 | 6 | Q | R Nijboer | 77 | 4 | 3 | ||||||||||||||||||
| F Passaro | 2 | 6 | 2 | Alt | A Moro Cañas | 77 | 6 | ||||||||||||||||||||
| Q | Marcello Serafini | 3 | 77 | 6 | 5 | J de Jong | 61 | 4 | |||||||||||||||||||
| WC | R Brancaccio | 6 | 62 | 4 | Q | M Serafini | 3 | 3 | |||||||||||||||||||
 N Fatić | 6 | 66 | 1r | 5 | J de Jong | 6 | 6 | ||||||||||||||||||||
| 5 | J de Jong | 3 | 78 | 4 | Alt | A Moro Cañas | 6 | 64 | 6 | ||||||||||||||||||
| 3 | JM Cerúndolo | 6 | 6 | S Travaglia | 3 | 77 | 2 | ||||||||||||||||||||
| O Roca Batalla | 3 | 2 | 3 | JM Cerúndolo | 6 | 5 | 2 | ||||||||||||||||||||
| S Travaglia | 6 | 6 | S Travaglia | 4 | 7 | 6 | |||||||||||||||||||||
| Q | G Oradini | 2 | 4 | S Travaglia | 711 | 7 | |||||||||||||||||||||
| Q | C Taberner | 6 | 78 | F Maestrelli | 69 | 5 | |||||||||||||||||||||
| Q |  I Buse | 1 | 66 | Q | C Taberner | 4 | 5 | ||||||||||||||||||||
| F Maestrelli | 6 | 6 | F Maestrelli | 6 | 7 | ||||||||||||||||||||||
| 6 | H Grenier | 0 | 4 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | H Dellien | 4 | 6 | 6 | |||||||||||||||||||||||
| WC | Samuel Vincent Ruggeri | 6 | 1 | 4 | 8 | H Dellien | 6 | 6 | |||||||||||||||||||
 I Gakhov | 6 | 4 | 6 | I Gakhov | 3 | 4 | |||||||||||||||||||||
| M Cecchinato | 3 | 6 | 2 | 8 | H Dellien | 2 | 6 | 6 | |||||||||||||||||||
 B Harris | 3 | 6 | 6 | B Harris | 6 | 3 | 4 | ||||||||||||||||||||
| Alt |  A Andreev | 6 | 3 | 4 | B Harris | 6 | 6 | ||||||||||||||||||||
| Alt | N Sánchez Izquierdo | 6 | 64 | 2 | 4 | J Kovalík | 3 | 4 | |||||||||||||||||||
| 4 | J Kovalík | 4 | 77 | 6 | 8 | H Dellien | 4 | 5 | |||||||||||||||||||
| 7 | A Pellegrino | 4 | 1 | Q | V Gaubas | 6 | 7 | ||||||||||||||||||||
| Q | V Gaubas | 6 | 6 | Q | V Gaubas | 7 | 4 | 6 | |||||||||||||||||||
| M Martineau | 3 | 6 | 6 | M Martineau | 5 | 6 | 4 | ||||||||||||||||||||
| G Blancaneaux | 6 | 3 | 2 | Q | V Gaubas | 6 | 6 | ||||||||||||||||||||
| WC | Gabriele Pennaforti | 77 | 3 | 3 | 2 | N Moreno de Alboran | 3 | 4 | |||||||||||||||||||
| F Agamenone | 64 | 6 | 6 | F Agamenone | 6 | 3 | 1 | ||||||||||||||||||||
| Alt | Edoardo Lavagno | 61 | 3 | 2 | N Moreno de Alboran | 4 | 6 | 6 | |||||||||||||||||||
| 2 | N Moreno de Alboran | 77 | 6 | ||||||||||||||||||||||||
Lý Hoàng Nam and Sumit Nagal were the defending champions, but were both ineligible to compete this year.
Laslo Đere was the defending champion but chose not to defend his title.
Nikoloz Basilashvili was the defending champion and successfully defended his title, defeating Andrey Rublev in the final, 7–5, 4–6, 6–3. En route to doing so, Basilashvili saved two match points against Alexander Zverev in the semifinals.
Alessandro Giannessi was the defending champion but chose not to defend his title.
Pablo Andújar was the defending champion but chose not to defend his title.
Cristian Garín was the defending champion but chose not to defend his title.
Cristian Garín was the defending champion but chose not to defend his title.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–2. He did not lose a single set in the entire tournament. The victory made Federer the first player in ATP history to win 10 same tournament titles on two different surfaces. It was his 103rd and final ATP title before announcing his retirement in 2022.
Guido Andreozzi was the defending champion but chose not to defend his title.
Botic van de Zandschulp was the defending champion but withdrew before his semifinal match against Taro Daniel.
Cristian Garín was the defending champion, but chose not to defend his title.
Diego Schwartzman defeated Francisco Cerúndolo in the final, 6–1, 6–2 to win the men's singles tennis title at the 2021 Argentina Open.
Lorenzo Sonego defeated defending champion Laslo Đere in the final, 2–6, 7–6(7–5), 6–4 to win the men's singles title at the 2021 Sardegna Open. With the victory, Sonego became the first Italian in 15 years to capture an ATP Tour title on home soil.
Oscar Otte was the defending champion but retired in the quarterfinals to Elias Ymer.
Andrey Rublev was the defending champion, but chose to not defend his title as he and other Russian Olympic athletes were sent to Yuzhno-Sakhalinsk for training sessions.
Max Purcell was the defending champion but chose not to defend his title.
Pedro Sousa was the defending champion but chose not to defend his title.
Sumit Nagal was the defending champion but chose not to defend his title.
Jiří Veselý was the defending champion but chose not to defend his title.
Max Purcell was the defending champion but chose not to defend his title.