| Singles | |
|---|---|
| 2021 Dutch Open | |
| Champion |  Tallon Griekspoor |
| Runner-up | Botic van de Zandschulp |
| Score | 6–1, 3–6, 6–1 |
Mats Moraing was the defending champion [1] but lost in the second round to Botic van de Zandschulp.
Tallon Griekspoor won the title after defeating van de Zandschulp 6–1, 3–6, 6–1 in the final.
Tallon Griekspoor (champion) Botic van de Zandschulp (final)
Marc Polmans (first round)
Antoine Hoang (semifinals)
Mohamed Safwat (second round)
Kimmer Coppejans (quarterfinals)
Guido Andreozzi (semifinals)
Lukáš Rosol (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Tallon Griekspoor | 4 | 6 | 6 | |||||||||
| 4 | Antoine Hoang | 6 | 3 | 4 | |||||||||
| 1 | Tallon Griekspoor | 6 | 3 | 6 | |||||||||
| 2 | Botic van de Zandschulp | 1 | 6 | 1 | |||||||||
| 7 | Guido Andreozzi | 77 | 3 | 2 | |||||||||
| 2 | Botic van de Zandschulp | 64 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | T Griekspoor | 6 | 77 | ||||||||||||||||||||||||
| Q | M Geerts | 2 | 62 | 1 | T Griekspoor | 6 | 6 | ||||||||||||||||||||
| Z Bergs | 4 | 62 | M Vrbenský | 4 | 4 | ||||||||||||||||||||||
| M Vrbenský | 6 | 77 | 1 | T Griekspoor | 3 | 6 | 6 | ||||||||||||||||||||
| WC | G Brouwer | 79 | 0 | 6 | K Coppejans | 6 | 3 | 2 | |||||||||||||||||||
| Q | Alexander Maarten Jong | 67 | 0r | WC | G Brouwer | 3 | 4 | ||||||||||||||||||||
| Q | Deney Wassermann | 3 | 7 | 2 | 6 | K Coppejans | 6 | 6 | |||||||||||||||||||
| 6 | K Coppejans | 6 | 5 | 6 | 1 | T Griekspoor | 4 | 6 | 6 | ||||||||||||||||||
| 4 | A Hoang | 6 | 77 | 4 | A Hoang | 6 | 3 | 4 | |||||||||||||||||||
 Y Maden | 4 | 65 | 4 | A Hoang | 77 | 77 | |||||||||||||||||||||
| Alt |  T Bellucci | 3 | 4 | F Mena | 64 | 65 | |||||||||||||||||||||
| F Mena | 6 | 6 | 4 | A Hoang | 6 | 77 | |||||||||||||||||||||
| WC | Ryan Nijboer | 65 | 2 | 8 | L Rosol | 4 | 64 | ||||||||||||||||||||
| Q |  J Nikles | 77 | 6 | Q | J Nikles | 2 | 1 | ||||||||||||||||||||
| V Kopřiva | 64 | 2 | 8 | L Rosol | 6 | 6 | |||||||||||||||||||||
| 8 | L Rosol | 77 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | G Andreozzi | 7 | 2 | 6 | |||||||||||||||||||||||
| J Lehečka | 5 | 6 | 4 | 7 | G Andreozzi | 7 | 2 | 6 | |||||||||||||||||||
| R Haase | 4 | 61 | A Vukic | 5 | 6 | 3 | |||||||||||||||||||||
| A Vukic | 6 | 77 | 7 | G Andreozzi | 3 | 6 | 6 | ||||||||||||||||||||
 JC Aragone | 1 | 1 | WC | J Sels | 6 | 4 | 2 | ||||||||||||||||||||
| WC | J Sels | 6 | 6 | WC | J Sels | 6 | 6 | ||||||||||||||||||||
 A Vatutin | 64 | 6 | 6 | A Vatutin | 2 | 2 | |||||||||||||||||||||
| 3 | M Polmans | 77 | 4 | 4 | 7 | G Andreozzi | 77 | 3 | 2 | ||||||||||||||||||
| 5 | M Safwat | 6 | 6 | 2 | B van de Zandschulp | 64 | 6 | 6 | |||||||||||||||||||
 G Elias | 1 | 3 | 5 | M Safwat | 6 | 1 | 4 | ||||||||||||||||||||
| M Guinard | 65 | 6 | 65 | J de Jong | 2 | 6 | 6 | ||||||||||||||||||||
| J de Jong | 77 | 4 | 77 | J de Jong | 3 | 0 | |||||||||||||||||||||
| M Moraing | 6 | 6 | 2 | B van de Zandschulp | 6 | 6 | |||||||||||||||||||||
| Alt | J Härteis | 1 | 0 | M Moraing | 3 | 5 | |||||||||||||||||||||
| G Oliveira | 2 | 4 | 2 | B van de Zandschulp | 6 | 7 | |||||||||||||||||||||
| 2 | B van de Zandschulp | 6 | 6 | ||||||||||||||||||||||||
Tallon Griekspoor is a Dutch professional tennis player. He has a career-high ATP singles ranking of world No. 29, achieved on 19 June 2023. He also has a career high ATP doubles ranking of World No. 217 achieved on 31 October 2022. Griekspoor is the current Dutch No. 1 men's singles player. He has won a record eight Challenger titles in one season (2021), and became also the first player in history to win five consecutive such titles.
Botic van de Zandschulp is a Dutch professional tennis player. Van de Zandschulp has a career high ranking of world No. 22 in singles by the ATP, achieved on 29 August 2022. He is the current Dutch No. 2 men's singles player. He also has a career high doubles ranking of world No. 60, achieved on 22 May 2023. Van de Zandschulp has won one ATP Challenger singles title in Hamburg and one ATP Challenger doubles title in Alphen.
This was the first edition of the tournament as a Challenger event.
This was the first edition of the tournament.
Gianluca Mager was the defending champion but chose not to defend his title.
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Botic van de Zandschulp was the defending champion but withdrew before his semifinal match against Taro Daniel.
Nikola Milojević was the defending champion but lost in the second round to Tomáš Macháč.
Andrey Rublev was the defending champion, but lost in the quarterfinals to Botic van de Zandschulp.
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Carlos Alcaraz defeated Pablo Carreño Busta in the final, 6–3, 6–2 to win the singles tennis title at the 2022 Barcelona Open. Alcaraz saved two match points en route to the title, in the semifinals against Alex de Minaur. With the win, Alcaraz entered the top 10 in rankings for the first time in his career, becoming the youngest man to do so since Rafael Nadal in 2005.
Holger Rune defeated Botic van de Zandschulp in the final by retirement, 3–4 to win the singles tennis title at the 2022 Bavarian International Tennis Championships. It marked Rune's maiden ATP Tour title, making him the third-youngest tournament champion in the Open Era and the first Dane to win an ATP title since Kenneth Carlsen at 2005 Memphis. Van de Zandschulp was also contesting for his maiden title in his first tour final.
Tallon Griekspoor was the defending champion and successfully defended his title, defeating Roberto Carballés Baena 6–1, 6–2 in the final.
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Novak Djokovic defeated Marin Čilić in the final, 6–3, 6–4 to win the singles tennis title at the 2022 Tel Aviv Open. Djokovic did not drop a set en route to his 89th ATP Tour-level singles title.
Tallon Griekspoor and Botic van de Zandschulp defeated Rohan Bopanna and Matwé Middelkoop in the final, 3–6, 6–3, [10–5] to win the doubles tennis title at the 2022 European Open.
Tallon Griekspoor defeated Benjamin Bonzi in the final, 4–6, 7–5, 6–3 to win the singles tennis title at the 2023 Maharashtra Open. It was his maiden ATP Tour singles title.
Roberto Carballés Baena defeated Alexandre Müller in the final, 4–6, 7–6(7–3), 6–2 to win the men's singles tennis title at the 2023 Grand Prix Hassan II. It was his second ATP Tour singles title.
Daniil Medvedev defeated Holger Rune in the final, 7–5, 7–5 to win the men's singles tennis title at the 2023 Italian Open. It was his fifth title of 2023, sixth career Masters 1000 title, and first ATP Tour title on clay. Before 2023, Medvedev had never won a match at the Italian Open in three previous appearances.
Hugo Nys and Jan Zieliński defeated Robin Haase and Botic van de Zandschulp in the final, 7–5, 6–1 to win the men's doubles tennis title at the 2023 Italian Open.