| Singles | |
|---|---|
| 2023 Garden Open | |
| Champion |  Sumit Nagal |
| Runner-up |  Jesper de Jong |
| Score | 6–3, 6–2 |
Franco Agamenone was the defending champion [1] but lost in the quarterfinals to Jesper de Jong.
Sumit Nagal won the title after defeating de Jong 6–3, 6–2 in the final. [2]
Fábián Marozsán (first round)
Franco Agamenone (quarterfinals) Mattia Bellucci (first round) Francesco Maestrelli (first round) Jelle Sels (second round) Andrea Pellegrino (withdrew)
Maximilian Neuchrist (first round)
Joris De Loore (semifinals)| Semifinals | Final | ||||||||||||
| 8 | Joris De Loore | 6 | 5 | 4 | |||||||||
| Q | Sumit Nagal | 2 | 7 | 6 | |||||||||
| Q | Sumit Nagal | 6 | 6 | ||||||||||
| Jesper de Jong | 3 | 2 | |||||||||||
| Flavio Cobolli | 5 | 3 | |||||||||||
| Jesper de Jong | 7 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | F Marozsán | 4 | 4 | ||||||||||||||||||||||||
| Q | Alexander Weis | 6 | 6 | Q | A Weis | 5 | 2 | ||||||||||||||||||||
 A Ritschard | 77 | 7 | A Ritschard | 7 | 6 | ||||||||||||||||||||||
| Alt |  N Serdarušić | 63 | 5 | A Ritschard | 7 | 1 | 4 | ||||||||||||||||||||
 N Fatić | 0r | 8 | J De Loore | 5 | 6 | 6 | |||||||||||||||||||||
| WC | Gabriele Piraino | 5 | WC | G Piraino | 78 | 1 | 4 | ||||||||||||||||||||
| M Geerts | 2 | 2 | 8 | J De Loore | 66 | 6 | 6 | ||||||||||||||||||||
| 8 | J De Loore | 6 | 6 | 8 | J De Loore | 6 | 5 | 4 | |||||||||||||||||||
| 4 | F Maestrelli | 2 | 4 | Q | S Nagal | 2 | 7 | 6 | |||||||||||||||||||
| Q | S Nagal | 6 | 6 | Q | S Nagal | 6 | 6 | ||||||||||||||||||||
 A Andreev | 0r | WC | F Tabacco | 3 | 0 | ||||||||||||||||||||||
| WC | Fausto Tabacco | 3 | Q | S Nagal | 7 | 6 | |||||||||||||||||||||
| Alt | M Houkes | 4 | 6 | 6 | Alt | M Houkes | 5 | 0 | |||||||||||||||||||
| Q |  V Vacherot | 6 | 3 | 4 | Alt | M Houkes | 6 | 77 | |||||||||||||||||||
| Alt |  FC Jianu | 5 | 3 | 5 | J Sels | 4 | 65 | ||||||||||||||||||||
| 5 | J Sels | 7 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| LL |  V Durasovic | 3 | 3 | ||||||||||||||||||||||||
| Q | F Forti | 6 | 6 | Q | F Forti | 5 | 1 | ||||||||||||||||||||
| F Cobolli | 712 | 4 | 77 | F Cobolli | 7 | 6 | |||||||||||||||||||||
 N Moreno de Alboran | 610 | 6 | 61 | F Cobolli | 7 | 7 | |||||||||||||||||||||
| WC | F Arnaboldi | 4 | 3 |  M Trungelliti | 5 | 5 | |||||||||||||||||||||
| M Trungelliti | 6 | 6 | M Trungelliti | 2 | 6 | 6 | |||||||||||||||||||||
| Q | G Fonio | 6 | 6 | Q | G Fonio | 6 | 1 | 2 | |||||||||||||||||||
| 3 | M Bellucci | 3 | 4 | F Cobolli | 5 | 3 | |||||||||||||||||||||
| 7 | M Neuchrist | 64 | 4 | J de Jong | 7 | 6 | |||||||||||||||||||||
| G Mager | 77 | 6 | G Mager | 0 | 3 | ||||||||||||||||||||||
| J de Jong | 6 | 6 | J de Jong | 6 | 6 | ||||||||||||||||||||||
 M Gengel | 3 | 2 | J de Jong | 6 | 6 | ||||||||||||||||||||||
 O Roca Batalla | 6 | 6 | 2 | F Agamenone | 3 | 4 | |||||||||||||||||||||
| LL | Miguel Damas | 1 | 1 | O Roca Batalla | 5 | 3 | |||||||||||||||||||||
| Q | S Caruso | 3 | 4 | 2 | F Agamenone | 7 | 6 | ||||||||||||||||||||
| 2 | F Agamenone | 6 | 6 | ||||||||||||||||||||||||
Orlando Luz and Marcelo Zormann were the defending champions, but they chose to participate at the Pan American Games instead.
Pablo Andújar 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.
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.
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.
Pedro Sousa was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Sumit Nagal was the defending champion but chose not to defend his title.
This was the first edition of the tournament and the first Challenger tournament in Turin since 2011.
Holger Rune was the defending champion but chose not to defend his title.
Tomás Martín Etcheverry was the defending champion but chose not to defend his title.
Franco Agamenone was the defending champion but chose not to defend his title.
Pedro Martínez was the defending champion but lost in the first round to Kimmer Coppejans.
Thiago Monteiro was the defending champion but chose not to defend his title.
Dmitry Popko was the defending champion but chose not to defend his title.
Facundo Díaz Acosta was the defending champion but lost in the final to Juan Manuel Cerúndolo.
Brandon Nakashima was the defending champion but chose not to defend his title.
Sumit Nagal was the defending champion but chose not to defend his title.
Fábián Marozsán was the defending champion but chose not to defend his title.
Franco Agamenone was the defending champion but lost in the first round of qualifying to Yanaki Milev.