| Singles | |
|---|---|
| 2023 Zug Open | |
| Champion |  Arthur Rinderknech |
| Runner-up |  Joris De Loore |
| Score | 3–6, 6–3, 6–4 |
Dominic Stricker was the defending champion [1] but lost in the first round to Joris De Loore.
Arthur Rinderknech won the title after defeating De Loore 3–6, 6–3, 6–4 in the final.
Arthur Rinderknech (champion)
Dominic Stricker (first round)
Jurij Rodionov (semifinals)
Fabio Fognini (semifinals)
Otto Virtanen (second round) Harold Mayot (second round) Alexander Ritschard (second round)
Dimitar Kuzmanov (second round)| Semifinals | Final | ||||||||||||
| 1 | Arthur Rinderknech | 4 | 7 | 6 | |||||||||
| 3 | Jurij Rodionov | 6 | 5 | 2 | |||||||||
| 1 | Arthur Rinderknech | 3 | 6 | 6 | |||||||||
| Joris De Loore | 6 | 3 | 4 | ||||||||||
| 4 | Fabio Fognini | 63 | 1 | ||||||||||
| Joris De Loore | 77 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Rinderknech | 77 | 6 | ||||||||||||||||||||||||
| Q | G Ferrari | 63 | 3 | 1 | A Rinderknech | 4 | 6 | 6 | |||||||||||||||||||
| WC | M Brunold | 3 | 2 | S Travaglia | 6 | 4 | 3 | ||||||||||||||||||||
| S Travaglia | 6 | 6 | 1 | A Rinderknech | 6 | 6 | |||||||||||||||||||||
| Alt |  M Pucinelli de Almeida | 2 | 4 | A Andreev | 2 | 2 | |||||||||||||||||||||
| A Andreev | 6 | 6 | A Andreev | 77 | 1 | 6 | |||||||||||||||||||||
 F Ferreira Silva | 6 | 4 | 2 | 6 | H Mayot | 65 | 6 | 4 | |||||||||||||||||||
| 6 | H Mayot | 4 | 6 | 6 | 1 | A Rinderknech | 4 | 7 | 6 | ||||||||||||||||||
| 3 | J Rodionov | 6 | 7 | 3 | J Rodionov | 6 | 5 | 2 | |||||||||||||||||||
 H Medjedovic | 3 | 5 | 3 | J Rodionov | 6 | 6 | |||||||||||||||||||||
| Q | R Bertola | 2 | 3 |  DN Mădăraș | 2 | 4 | |||||||||||||||||||||
| DN Mădăraș | 6 | 6 | 3 | J Rodionov | 6 | 7 | |||||||||||||||||||||
| M Neuchrist | 4 | 4 | Z Bergs | 3 | 5 | ||||||||||||||||||||||
| Z Bergs | 6 | 6 | Z Bergs | 2 | 79 | 6 | |||||||||||||||||||||
| Q |  E Kırkın | 63 | 4 | 5 | O Virtanen | 6 | 67 | 3 | |||||||||||||||||||
| 5 | O Virtanen | 77 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | A Ritschard | 6 | 6 | ||||||||||||||||||||||||
| Q |  T Handel | 2 | 1 | 7 | A Ritschard | 4 | 4 | ||||||||||||||||||||
 J Menšík | 6 | 6 | J Menšík | 6 | 6 | ||||||||||||||||||||||
 S Rodríguez Taverna | 4 | 3 | J Menšík | 4 | 2 | ||||||||||||||||||||||
| Alt |  A Dougaz | 6 | 6 | 4 | F Fognini | 6 | 6 | ||||||||||||||||||||
 J Sels | 3 | 4 | Alt | A Dougaz | 6 | 65 | 0 | ||||||||||||||||||||
| WC | K Feldbausch | 4 | 2 | 4 | F Fognini | 1 | 77 | 6 | |||||||||||||||||||
| 4 | F Fognini | 6 | 6 | 4 | F Fognini | 63 | 1 | ||||||||||||||||||||
| 8 | D Kuzmanov | 6 | 6 | J De Loore | 77 | 6 | |||||||||||||||||||||
| Q | Dylan Dietrich | 2 | 1 | 8 | D Kuzmanov | 4 | 65 | ||||||||||||||||||||
| D Svrčina | 1 | 77 | 3 | WC | M Gigante | 6 | 77 | ||||||||||||||||||||
| WC | M Gigante | 6 | 62 | 6 | WC | M Gigante | 6 | 65 | 4 | ||||||||||||||||||
| Q | M Guinard | 3 | 7 | 66 | J De Loore | 3 | 77 | 6 | |||||||||||||||||||
| G Blancaneaux | 6 | 5 | 78 | G Blancaneaux | 65 | 77 | 3 | ||||||||||||||||||||
| J De Loore | 4 | 7 | 6 | J De Loore | 77 | 64 | 6 | ||||||||||||||||||||
| 2 | D Stricker | 6 | 5 | 3 | |||||||||||||||||||||||
Tiago Fernandes was the defending champion, having defeated Sean Berman in the 2010 final. He chose not to defend his title.
Jiří Veselý won the title defeating Luke Saville 6–0, 6–3, in the final. The player from Czech Republic won every match in straight sets.
Dutch players Justin Eleveld and Jannick Lupescu chose to not defend their 2010 title, when they defeated Kevin Krawietz and Dominik Schulz in the final.
Filip Horanský and Jiří Veselý won this year's title, by defeating Ben Wagland and Andrew Whittington 6–4, 6–4 in the final match.
Jo-Wilfried Tsonga was the defending champion, but due to injury did not defend his title.
Matheus Pucinelli de Almeida and Thiago Agustín Tirante won the boys' doubles tennis title at the 2019 French Open, defeating Flavio Cobolli and Dominic Stricker in the final, 7–6(7–3), 6–4.
Dominic Stricker won the title, defeating Leandro Riedi in an all-Swiss final, 6–2, 6–4.
Matheus Pucinelli de Almeida and Thiago Agustín Tirante were the defending champions, but both players were no longer eligible to participate in junior events.
Benoît Paire was the defending champion from when the event was last held in 2019, but chose to participate in Geneva instead.
Luca Van Assche won the title, defeating Arthur Fils in an all-French final, 6–4, 6–2. This was the first Grand Slam junior tournament with all-French semifinalists.
In the 2021 French Open – Boys' doubles, Flavio Cobolli and Dominic Stricker were the defending champions, but both players were no longer eligible to participate in junior events.
Arthur Rinderknech was the defending champion but lost in the semifinals to Benjamin Bonzi.
Max Purcell and Luke Saville were the defending champions but chose not to compete.
Dominic Stricker was the defending champion but lost in the first round to Jurij Rodionov.
Facundo Bagnis was the defending champion but lost in the semifinals to Thiago Monteiro.
Félix Auger-Aliassime defeated Sebastian Korda in the final, 6–3, 6–4 to win the singles tennis title at the 2022 European Open. It was his second title in as many weeks and third career ATP Tour singles title overall.
Félix Auger-Aliassime defeated Holger Rune in the final, 6–3, 7–5 to win the singles tennis title at the 2022 Swiss Indoors. It was his third title in as many weeks and fourth career ATP Tour singles title overall.
Joris De Loore was the defending champion but lost in the final to Arthur Fils.
This was the first edition of the tournament.
Emilio Gómez was the defending champion but chose not to defend his title.
Márton Fucsovics was the defending champion but chose not to defend his title.
Otto Virtanen was the defending champion but lost in the semifinals to Arthur Rinderknech.