| Singles | |
|---|---|
| 2023 Bahrain Ministry of Interior Tennis Challenger | |
| Champion |  Thanasi Kokkinakis |
| Runner-up |  Abedallah Shelbayh |
| Score | 6–1, 6–4 |
Ramkumar Ramanathan was the defending champion [1] but chose not to defend his title.
Thanasi Kokkinakis won the title after defeating Abedallah Shelbayh 6–1, 6–4 in the final. Shelbayh became the first Jordanian player to reach a final on the Challenger tour. [2]
Jason Kubler (quarterfinals) Alexei Popyrin (quarterfinals) Christopher O'Connell (second round)
Francesco Passaro (second round) Matteo Arnaldi (first round)
Tomáš Macháč (quarterfinals)
Pavel Kotov (first round) Thanasi Kokkinakis (champion)| Semifinals | Final | ||||||||||||
| WC | Abedallah Shelbayh | 7 | 6 | ||||||||||
| LL | Salvatore Caruso | 5 | 2 | ||||||||||
| WC | Abedallah Shelbayh | 1 | 4 | ||||||||||
| 8 | Thanasi Kokkinakis | 6 | 6 | ||||||||||
 Jan-Lennard Struff | 4 | 77 | 1 | ||||||||||
| 8 | Thanasi Kokkinakis | 6 | 63 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Kubler | 5 | 6 | 713 | |||||||||||||||||||||||
| SE | S Travaglia | 7 | 1 | 611 | 1 | J Kubler | 6 | 6 | |||||||||||||||||||
| WC |  Y Qaed | 1 | 3 |  D Michalski | 3 | 3 | |||||||||||||||||||||
| D Michalski | 6 | 6 | 1 | J Kubler | 2 | 7 | 62 | ||||||||||||||||||||
| WC | Bekkhan Atlangeriev | 2 | 3 | WC | A Shelbayh | 6 | 5 | 77 | |||||||||||||||||||
| WC | A Shelbayh | 6 | 6 | WC | A Shelbayh | 6 | 3 | 6 | |||||||||||||||||||
| V Kopřiva | 6 | 6 | V Kopřiva | 4 | 6 | 3 | |||||||||||||||||||||
| 7 | P Kotov | 2 | 1 | WC | A Shelbayh | 7 | 6 | ||||||||||||||||||||
| 4 | F Passaro | 6 | 6 | LL | S Caruso | 5 | 2 | ||||||||||||||||||||
 K Uchida | 1 | 4 | 4 | F Passaro | 5 | 3 | |||||||||||||||||||||
| L Giustino | 6 | 6 | L Giustino | 7 | 6 | ||||||||||||||||||||||
| Q |  M Safwat | 4 | 4 | L Giustino | 5 | 2 | |||||||||||||||||||||
 FC Jianu | 63 | 77 | 63 | LL | S Caruso | 7 | 6 | ||||||||||||||||||||
| M Gengel | 77 | 62 | 77 | M Gengel | 1 | 2 | |||||||||||||||||||||
| LL | S Caruso | 3 | 6 | 6 | LL | S Caruso | 6 | 6 | |||||||||||||||||||
| 5 | M Arnaldi | 6 | 3 | 2 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | T Macháč | 6 | 2 | 6 | |||||||||||||||||||||||
| A Giannessi | 2 | 6 | 2 | 6 | T Macháč | 6 | 6 | ||||||||||||||||||||
| LL |  C Sinclair | 77 | 2 | 6 | LL | C Sinclair | 0 | 2 | |||||||||||||||||||
| Q | A Arnaboldi | 63 | 6 | 3 | 6 | T Macháč | 4 | 3 | |||||||||||||||||||
| J-L Struff | 6 | 6 | J-L Struff | 6 | 6 | ||||||||||||||||||||||
| LL | Andrey Chepelev | 2 | 2 | J-L Struff | 6 | 77 | |||||||||||||||||||||
 M Neuchrist | 4 | 4 | 3 | C O'Connell | 1 | 61 | |||||||||||||||||||||
| 3 | C O'Connell | 6 | 6 | J-L Struff | 4 | 77 | 1 | ||||||||||||||||||||
| 8 | T Kokkinakis | 7 | 6 | 8 | T Kokkinakis | 6 | 63 | 6 | |||||||||||||||||||
| Q |  Y Erel | 5 | 1 | 8 | T Kokkinakis | 6 | 4 | 6 | |||||||||||||||||||
 A Müller | 6 | 6 | A Müller | 4 | 6 | 4 | |||||||||||||||||||||
| Alt |  O Roca Batalla | 3 | 1 | 8 | T Kokkinakis | 6 | 77 | ||||||||||||||||||||
| Q |  V Durasovic | 66 | 6 | 7 | 2 | A Popyrin | 3 | 65 | |||||||||||||||||||
| Q |  Aleksandr Braynin | 78 | 1 | 5 | Q | V Durasovic | 6 | 1 | 4 | ||||||||||||||||||
 O Virtanen | 5 | 2 | 2 | A Popyrin | 1 | 6 | 6 | ||||||||||||||||||||
| 2 | A Popyrin | 7 | 6 | ||||||||||||||||||||||||
Marin Čilić was the defending champion, but withdrew due to injury.
Kei Nishikori was the two-time defending champion and successfully defended his title, defeating Kevin Anderson 6–4, 6–4 in the final.
Andy Murray defeated the two-time defending champion Rafael Nadal in the final, 6–3, 6–2 to win the men's singles tennis title at the 2015 Madrid Open. It was his second title in as many weeks.
Quentin Halys was the defending champion but chose not to defend his title.
Yoshihito Nishioka was the defending champion but chose not to defend his title.
Sadio Doumbia was the defending champion but chose not to defend his title.
John Isner defeated Alexander Zverev in the final, 6–7(4–7), 6–4, 6–4 to win the men's singles tennis title at the 2018 Miami Open. It was Isner's maiden Masters 1000 title, and he became the first new Miami Open champion in nine years.
Lu Yen-hsun was the defending champion but chose not to defend his title.
John Isner was the defending champion and successfully defended his title, defeating Ryan Harrison in a rematch of the 2017 final, 5–7, 6–3, 6–4.
Alexander Bublik was the defending champion but chose not to defend his title.
Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.
Evgeny Karlovskiy was the defending champion but lost in the first round to Stefan Kozlov.
Thanasi Kokkinakis was the defending champion but lost in the second round to Egor Gerasimov.
Thanasi Kokkinakis and Matt Reid were the defending champions but only Reid chose to defend his title, partnering Jonny O'Mara. Reid lost in the first round to Egor Gerasimov and Li Zhe.
Michael Mmoh was the defending champion but lost in the second round to Brandon Nakashima.
Denis Kudla was the defending champion but chose not to defend his title.
Jannik Sinner was the defending champion but chose not to defend his title.
Marc-Andrea Hüsler was the defending champion but lost in the semifinals to Thanasi Kokkinakis.
Marcel Granollers and Ben McLachlan were the defending champions but chose not to defend their title.
Purav Raja and Ramkumar Ramanathan were the defending champions but only Ramanathan chose to defend his title, partnering Arjun Kadhe. Ramanathan lost in the quarterfinals to Marc Polmans and Jason Taylor.