| Singles | |
|---|---|
| 2023 IBG Prague Open | |
| Champion |  Rudolf Molleker |
| Runner-up |  Gabriel Debru |
| Score | 6–2, 6–2 |
Oleksii Krutykh was the defending champion [1] but chose not to defend his title.
Rudolf Molleker won the title after defeating Gabriel Debru 6–2, 6–2 in the final.
Lukas Neumayer (first round)
Francesco Maestrelli (first round) Luciano Darderi (quarterfinals) Rudolf Molleker (champion)
João Sousa (semifinals) Henri Squire (first round) Mathias Bourgue (first round)
Valentin Vacherot (semifinals)| Semifinals | Final | ||||||||||||
| Q | Gabriel Debru | 5 | 6 | 6 | |||||||||
| 5 | João Sousa | 7 | 3 | 4 | |||||||||
| Q | Gabriel Debru | 2 | 2 | ||||||||||
| 4 | Rudolf Molleker | 6 | 6 | ||||||||||
| 4 | Rudolf Molleker | 6 | 77 | ||||||||||
| 8 | Valentin Vacherot | 4 | 65 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | L Neumayer | 6 | 3 | 4 | |||||||||||||||||||||||
| Q | G Debru | 2 | 6 | 6 | Q | G Debru | 7 | 6 | |||||||||||||||||||
| WC |  Hynek Bartoň | 6 | 3 | 2 | Q | J Nicod | 5 | 1 | |||||||||||||||||||
| Q | Jakub Nicod | 1 | 6 | 6 | Q | G Debru | 77 | 63 | 6 | ||||||||||||||||||
| C Hemery | 4 | 6 | 2 | WC |  T Kodat | 64 | 77 | 4 | |||||||||||||||||||
| WC | T Kodat | 6 | 1 | 6 | WC | T Kodat | 6 | 6 | |||||||||||||||||||
 H Laaksonen | 4 | 77 | 6 | H Laaksonen | 3 | 3 | |||||||||||||||||||||
| 7 | M Bourgue | 6 | 63 | 2 | Q | G Debru | 5 | 6 | 6 | ||||||||||||||||||
| 3 | L Darderi | 6 | 67 | 77 | 5 | J Sousa | 7 | 3 | 4 | ||||||||||||||||||
| M Janvier | 3 | 79 | 65 | 3 | L Darderi | 6 | 6 | ||||||||||||||||||||
| Q | M Vrbenský | 6 | 7 | Q | M Vrbenský | 4 | 1 | ||||||||||||||||||||
 D Jordà Sanchis | 3 | 5 | 3 | L Darderi | 5 | 6 | 63 | ||||||||||||||||||||
| WC | J Forejtek | 6 | 3 | 6 | 5 | J Sousa | 7 | 3 | 77 | ||||||||||||||||||
| J Barranco Cosano | 4 | 6 | 4 | WC | J Forejtek | 0 | 6 | 4 | |||||||||||||||||||
| V Royer | 4 | 1 | 5 | J Sousa | 6 | 4 | 6 | ||||||||||||||||||||
| 5 | J Sousa | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | H Squire | 6 | 4 | 3 | |||||||||||||||||||||||
| Q |  FA Gómez | 4 | 6 | 6 | Q | FA Gómez | 6 | 6 | |||||||||||||||||||
| L Giustino | 6 | 6 | L Giustino | 3 | 3 | ||||||||||||||||||||||
 FC Jianu | 4 | 3 | Q | FA Gómez | 3 | 3 | |||||||||||||||||||||
| M Gengel | 2 | 2 | 4 | R Molleker | 6 | 6 | |||||||||||||||||||||
| M Chazal | 6 | 6 | M Chazal | 2 | 2 | ||||||||||||||||||||||
| L Rosol | 3 | 4 | 4 | R Molleker | 6 | 6 | |||||||||||||||||||||
| 4 | R Molleker | 6 | 6 | 4 | R Molleker | 6 | 77 | ||||||||||||||||||||
| 8 | V Vacherot | 6 | 6 | 8 | V Vacherot | 4 | 65 | ||||||||||||||||||||
| Q |  Kirill Kivattsev | 4 | 4 | 8 | V Vacherot | 6 | 6 | ||||||||||||||||||||
| F Mena | 7 | 6 | F Mena | 2 | 4 | ||||||||||||||||||||||
| PR | Carlos López Montagud | 5 | 3 | 8 | V Vacherot | 77 | 6 | ||||||||||||||||||||
| A Paulson | 6 | 6 | A Paulson | 65 | 2 | ||||||||||||||||||||||
| Q |  Paweł Ciaś | 4 | 4 | A Paulson | 6 | 6 | |||||||||||||||||||||
| Mathys Erhard | 77 | 5 | 6 | M Erhard | 3 | 3 | |||||||||||||||||||||
| 2 | F Maestrelli | 60 | 7 | 3 | |||||||||||||||||||||||
Oliver Anderson won the title, defeating Jurabek Karimov in the final, 6–2, 1–6, 6–1.
Nicola Kuhn and Zsombor Piros won the boys' doubles tennis title at the 2017 French Open, defeating Vasil Kirkov and Danny Thomas in the final, 6–4, 6–4.
Denis Shapovalov was the defending champion but chose to compete in the gentlemen's singles instead. He lost to Jerzy Janowicz in the first round.
Hugo Gaston and Clément Tabur won the boys' doubles tennis title at the 2018 Australian Open, defeating Rudolf Molleker and Henri Squire in the final, 6–2, 6–2.
Tseng Chun-hsin won the boys' singles tennis title at the 2018 French Open, defeating Sebastián Báez in the final, 7–6(7–5), 6–2.
Ricardo Ojeda Lara was the defending champion but chose not to defend his title.
Damir Džumhur was the defending champion, but lost to Egor Gerasimov in the first round.
Maximilian Marterer was the defending champion but chose not to defend his title.
Ilya Ivashka was the defending champion but chose not to defend his title.
Stefano Travaglia was the defending champion but chose not to defend his title.
Hubert Hurkacz was the defending champion but lost in the semifinals to Rudolf Molleker.
Marco Cecchinato was the defending champion, but lost in the first round to Aljaž Bedene.
Guido Andreozzi was the defending champion but lost to Jozef Kovalík in the final.
Roberto Carballés Baena was the defending champion but retired in the third round against Jozef Kovalík.
Karen Khachanov was the defending champion, but lost in the quarterfinals to Andreas Seppi.
Zizou Bergs was the defending champion but lost in the second round to Kacper Żuk.
Kevin Krawietz and Horia Tecău defeated Félix Auger-Aliassime and Hubert Hurkacz in the final, 7–6(7–4), 6–4, to win the doubles tennis title at the 2021 Halle Open. It was their first title as a team.
Alexander Ritschard was the defending champion but chose not to defend his title.
Dušan Lajović was the defending champion but chose not to defend his title.
Dominic Stricker was the defending champion but chose not to defend his title.