| Singles | |
|---|---|
| 2023 Schwaben Open | |
| Champion |  Carlos Taberner |
| Runner-up | Oriol Roca Batalla |
| Score | 6–4, 6–4 |
Yannick Hanfmann was the defending champion [1] but chose not to defend his title.
Carlos Taberner won the title after defeating Oriol Roca Batalla 6–4, 6–4 in the final.
Hernán Casanova (first round, retired)
Benjamin Hassan (quarterfinals, retired) Román Andrés Burruchaga (first round)
Steven Diez (second round)
Manuel Guinard (first round, retired) Santiago Rodríguez Taverna (first round)
Timo Stodder (semifinals) Nikolás Sánchez Izquierdo (first round)| Semifinals | Final | ||||||||||||
| Q |  Nicolas Zanellato | 3 | 4 | ||||||||||
| Oriol Roca Batalla | 6 | 6 | |||||||||||
| Oriol Roca Batalla | 4 | 4 | |||||||||||
| Carlos Taberner | 6 | 6 | |||||||||||
| Carlos Taberner | 6 | 6 | |||||||||||
| 7 | Timo Stodder | 3 | 3 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | H Casanova | 4r | |||||||||||||||||||||||||
| Lucas Gerch | 5 | L Gerch | 3 | 4 | |||||||||||||||||||||||
| LL |  H Rocha | 1 | 1 |  M Echargui | 6 | 6 | |||||||||||||||||||||
| M Echargui | 6 | 6 | M Echargui | 5 | 1 | ||||||||||||||||||||||
| Elmar Ejupovic | 6 | 4 | 2 | Q | N Zanellato | 7 | 6 | ||||||||||||||||||||
| Q | Nicolas Zanellato | 3 | 6 | 6 | Q | N Zanellato | 3 | 7 | 6 | ||||||||||||||||||
| WC | M Möller | 2 | 6 | 6 | WC | M Möller | 6 | 5 | 4 | ||||||||||||||||||
| 8 | N Sánchez Izquierdo | 6 | 2 | 0 | Q | N Zanellato | 3 | 4 | |||||||||||||||||||
| 4 | S Diez | 6 | 68 | 6 | O Roca Batalla | 6 | 6 | ||||||||||||||||||||
| Q |  D Pichler | 3 | 710 | 1 | 4 | S Diez | 1 | 4 | |||||||||||||||||||
| Q | C Negritu | 2 | 78 | 3 | O Roca Batalla | 6 | 6 | ||||||||||||||||||||
| O Roca Batalla | 6 | 66 | 6 | O Roca Batalla | 6 | 6 | |||||||||||||||||||||
 Alexander Weis | 2 | 7 | 4 |  N Serdarušić | 4 | 4 | |||||||||||||||||||||
| M Martineau | 6 | 5 | 6 | M Martineau | 3 | 6 | 4 | ||||||||||||||||||||
| N Serdarušić | 6 | 1 | N Serdarušić | 6 | 4 | 6 | |||||||||||||||||||||
| 5 | M Guinard | 1 | 0r | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | S Rodríguez Taverna | 5 | 62 | ||||||||||||||||||||||||
| L Wessels | 7 | 77 | L Wessels | 2 | 4 | ||||||||||||||||||||||
| Q | G Ferrari | 61 | 6 | 6 | Q | G Ferrari | 6 | 6 | |||||||||||||||||||
 B Harris | 77 | 1 | 4 | Q | G Ferrari | 4 | 1 | ||||||||||||||||||||
 O Crawford | 6 | 6 | C Taberner | 6 | 6 | ||||||||||||||||||||||
| G Fonio | 2 | 3 | O Crawford | 6 | 4 | 63 | |||||||||||||||||||||
| C Taberner | 6 | 6 | C Taberner | 3 | 6 | 77 | |||||||||||||||||||||
| 3 | RA Burruchaga | 1 | 4 | C Taberner | 6 | 6 | |||||||||||||||||||||
| 7 | Timo Stodder | 7 | 6 | 7 | T Stodder | 3 | 3 | ||||||||||||||||||||
 M Houkes | 5 | 1 | 7 | T Stodder | 6 | 6 | |||||||||||||||||||||
| Q | H Habib | 64 | 6 | 62 | A Martin | 1 | 1 | ||||||||||||||||||||
| A Martin | 77 | 3 | 77 | 7 | T Stodder | 4 | 77 | 5 | |||||||||||||||||||
 G-A Bailly | 6 | 6 | 2 | B Hassan | 6 | 64 | 3r | ||||||||||||||||||||
| WC | M Topo | 1 | 2 | G-A Bailly | 4 | 4 | |||||||||||||||||||||
| Q | D Masur | 2 | 64 | 2 | B Hassan | 6 | 6 | ||||||||||||||||||||
| 2 | B Hassan | 6 | 77 | ||||||||||||||||||||||||
Philipp Kohlschreiber was the defending champion, but lost in the second round to Horacio Zeballos.
Feliciano López was the defending champion, but lost in the second round to Yannick Hanfmann.
Tomáš Berdych was the two-time defending champion, but withdrew before the competition began.
Nick Kyrgios was the defending champion, but chose to compete in Beijing instead.
Andrej Martin was the defending champion but chose not to defend his title.
Filip Krajinović was the defending champion but chose not to defend his title.
Singles matches were held in 2018 at the 2018 Shymkent Challenger clay court tennis tournament held June 4 to 9 in Shymkent, Kazahkstan.
Filip Krajinović was the defending champion but chose not to defend his title.
Nicola Kuhn was the defending champion but lost in the first round to Yannick Hanfmann.
Fabio Fognini was the defending champion, but lost in the second round to Jürgen Zopp.
Martin Kližan won the title, defeating Denis Istomin in the final, 6–2, 6–2. This was the second final in ATP history to be contested between two qualifiers, the first occurring at the 2015 Apia International Sydney.
Defending champion Yannick Hanfmann chose not to defend his title.
Andrea Collarini was the defending champion but lost in the first round to Marco Cecchinato.
Christopher O'Connell was the defending champion but chose not to defend his title.
Dominic Thiem was the defending champion and chose not to defend his title, as he was still competing at the 2020 US Open.
Filip Krajinović was the defending champion but chose not to defend his title.
Pedro Cachin was the defending champion but chose to not defend his title.
Yannick Hanfmann was the defending champion but chose not to defend his title.
Matteo Berrettini defeated Andy Murray in the final, 6–4, 5–7, 6–3 to win the singles tennis title at the 2022 Stuttgart Open.
Defending champion Casper Ruud defeated Matteo Berrettini in the final, 4–6, 7–6(7–4), 6–2 to win the singles tennis title at the 2022 Swiss Open Gstaad.
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