| Singles | |
|---|---|
| 2021 Slovak Open II | |
| Champion |  Tallon Griekspoor |
| Runner-up |  Zsombor Piros |
| Score | 6–3, 6–2 |
Maximilian Marterer was the defending champion [1] but lost in the quarterfinals to Stefano Travaglia.
Tallon Griekspoor won the title after defeating Zsombor Piros 6–3, 6–2 in the final.
Stefano Travaglia (semifinals, retired) Tallon Griekspoor (champion)
Carlos Taberner (first round)
Norbert Gombos (first round) Alex Molčan (semifinals)
Gilles Simon (withdrew)
Liam Broady (second round)
Tomáš Macháč (first round)| Semifinals | Final | ||||||||||||
| 1 | Stefano Travaglia | 65 | 2r | ||||||||||
| Q | Zsombor Piros | 77 | 3 | ||||||||||
| Q | Zsombor Piros | 3 | 2 | ||||||||||
| 2 | Tallon Griekspoor | 6 | 6 | ||||||||||
| 5 | Alex Molčan | 77 | 3 | 4 | |||||||||
| 2 | Tallon Griekspoor | 65 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | S Travaglia | 77 | 6 | ||||||||||||||||||||||||
| Z Kolář | 64 | 3 | 1 | S Travaglia | 6 | 6 | |||||||||||||||||||||
 C İlkel | 6 | 61 | 6 | C İlkel | 4 | 2 | |||||||||||||||||||||
| LL |  A Shevchenko | 4 | 77 | 3 | 1 | S Travaglia | 77 | 6 | |||||||||||||||||||
 M Marterer | 4 | 6 | 6 | M Marterer | 61 | 1 | |||||||||||||||||||||
 J Rodionov | 6 | 1 | 4 | M Marterer | 6 | 78 | |||||||||||||||||||||
 I Marchenko | 2 | 1 | 7 | L Broady | 4 | 66 | |||||||||||||||||||||
| 7 | L Broady | 6 | 6 | 1 | S Travaglia | 65 | 2r | ||||||||||||||||||||
| 3 | C Taberner | 2 | 65 | Q | Z Piros | 77 | 3 | ||||||||||||||||||||
 F Ferreira Silva | 6 | 77 | F Ferreira Silva | 6 | 7 | ||||||||||||||||||||||
| Q | D Svrčina | 2 | 77 | 6 | Q | D Svrčina | 4 | 5 | |||||||||||||||||||
| F Horanský | 6 | 65 | 1 | F Ferreira Silva | 0 | 4 | |||||||||||||||||||||
| Q | M Karol | 4 | 3 | Q | Z Piros | 6 | 6 | ||||||||||||||||||||
| L Lacko | 6 | 6 | L Lacko | 2 | 4 | ||||||||||||||||||||||
| Q | Z Piros | 7 | 3 | 6 | Q | Z Piros | 6 | 6 | |||||||||||||||||||
| 8 | T Macháč | 5 | 6 | 4 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | A Molčan | 6 | 79 | ||||||||||||||||||||||||
 R Ramanathan | 3 | 67 | 5 | A Molčan | 6 | 6 | |||||||||||||||||||||
| WC | J Forejtek | 2 | 4 | Alt | T Kamke | 2 | 2 | ||||||||||||||||||||
| Alt | T Kamke | 6 | 6 | 5 | A Molčan | 6 | 4 | 6 | |||||||||||||||||||
| J Sousa | 66 | 77 | 62 |  D Džumhur | 1 | 6 | 3 | ||||||||||||||||||||
| A Çelikbilek | 78 | 63 | 77 | A Çelikbilek | 4 | 4 | |||||||||||||||||||||
| D Džumhur | 6 | 6 | D Džumhur | 6 | 6 | ||||||||||||||||||||||
| 4 | N Gombos | 3 | 3 | 5 | A Molčan | 77 | 3 | 4 | |||||||||||||||||||
| LL |  S Mochizuki | 65 | 3 | 2 | T Griekspoor | 65 | 6 | 6 | |||||||||||||||||||
 K Żuk | 77 | 6 | K Żuk | 6 | 3 | 2 | |||||||||||||||||||||
| S Stakhovsky | 4 | 5 | J Lehečka | 2 | 6 | 6 | |||||||||||||||||||||
| J Lehečka | 6 | 7 | J Lehečka | 63 | 4 | ||||||||||||||||||||||
| Q | D Kalenichenko | 77 | 77 | 2 | T Griekspoor | 77 | 6 | ||||||||||||||||||||
| WC | Lukáš Palovič | 64 | 65 | Q | D Kalenichenko | 62 | 61 | ||||||||||||||||||||
| WC | Lukáš Pokorný | 64 | 1 | 2 | T Griekspoor | 77 | 77 | ||||||||||||||||||||
| 2 | T Griekspoor | 77 | 6 | ||||||||||||||||||||||||
Robin Haase was the defending champion but chose not to defend his title.
Andrey Rublev was the defending champion, but lost in the quarterfinals to Robin Haase. This was Rublev's first tournament back on tour after missing three months due to a stress fracture in his back.
Maximilian Marterer was the defending champion but chose not to defend his title.
Matteo Berrettini was the defending champion but chose not to defend his title.
Gianluigi Quinzi was the defending champion but lost in the second round to Tomislav Brkić.
Arthur De Greef was the defending champion but lost in the third round to Tomáš Macháč.
Gianluca Mager was the defending champion but chose not to defend his title.
Nikola Milojević was the defending champion but lost in the second round to Tomáš Macháč.
This was the first edition of the tournament.
Jozef Kovalík was the defending champion but chose not to defend his title.
Andrey Rublev defeated Félix Auger-Aliassime in the final, 7–5, 7–6(7–4) to win the singles title at the 2022 Open 13 Provence.
Tallon Griekspoor was the defending champion but chose not to defend his title.
David Goffin defeated Alex Molčan in the final, 3–6, 6–3, 6–3 to win the singles tennis title at the 2022 Grand Prix Hassan II. It was Goffin's sixth ATP singles title.
The men's singles of the 2022 I.ČLTK Prague Open tournament took place on clay in Prague, Czech Republic.
Tallon Griekspoor was the defending champion and successfully defended his title, defeating Roberto Carballés Baena 6–1, 6–2 in the final.
Tallon Griekspoor was the defending champion but chose not to defend his title.
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 first ATP Tour singles title.
Nicolás Jarry defeated Grigor Dimitrov in the final, 7–6(7–1), 6–1 to win the singles tennis title at the 2023 Geneva Open.
Tallon Griekspoor was the defending champion but chose not to defend his title.
Alex de Minaur defeated Sebastian Korda in the final, 6–2, 6–4 to win the men's singles tennis title at the 2024 Libéma Open. De Minaur did not drop a set en route to his ninth ATP Tour title and his second on grass, after the 2021 Eastbourne International. He became the first Australian man to win the title since Lleyton Hewitt in 2001.