| Singles | |
|---|---|
| 2023 Columbus Challenger | |
| Champion |  Denis Kudla |
| Runner-up |  Alexis Galarneau |
| Score | 6–2, 6–1 |
Jordan Thompson was the defending champion [1] but chose not to defend his title.
Denis Kudla won the title after defeating Alexis Galarneau 6–2, 6–1 in the final.
Enzo Couacaud (quarterfinals) Denis Kudla (champion)
Emilio Gómez (first round) Vasek Pospisil (quarterfinals) Tennys Sandgren (second round) Alexis Galarneau (final)
Adam Walton (second round) Zachary Svajda (second round)| Semifinals | Final | ||||||||||||
| 6 | Alexis Galarneau | 6 | 77 | ||||||||||
| WC | Cannon Kingsley | 4 | 62 | ||||||||||
| 6 | Alexis Galarneau | 2 | 1 | ||||||||||
| 2 | Denis Kudla | 6 | 6 | ||||||||||
 Ryan Peniston | 5 | 2 | |||||||||||
| 2 | Denis Kudla | 7 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | E Couacaud | 6 | 7 | ||||||||||||||||||||||||
| Q | Aidan Mayo | 2 | 5 | 1 | E Couacaud | 7 | 6 | ||||||||||||||||||||
| Q |  FA Gómez | 7 | 77 | Q | FA Gómez | 5 | 4 | ||||||||||||||||||||
| E Quinn | 5 | 63 | 1 | E Couacaud | 3 | 4 | |||||||||||||||||||||
| Q | Jack Anthrop | 1 | 0 | 6 | A Galarneau | 6 | 6 | ||||||||||||||||||||
| L Lokoli | 6 | 6 | L Lokoli | 5 | 65 | ||||||||||||||||||||||
| JP Ficovich | 4 | 3 | 6 | A Galarneau | 7 | 77 | |||||||||||||||||||||
| 6 | A Galarneau | 6 | 6 | 6 | A Galarneau | 6 | 77 | ||||||||||||||||||||
| 3 | E Gómez | 0 | 6 | 3 | WC | C Kingsley | 4 | 62 | |||||||||||||||||||
| Q |  J Trotter | 6 | 4 | 6 | Q | J Trotter | 4 | 77 | 3 | ||||||||||||||||||
| WC | C Kingsley | 6 | 6 | WC | C Kingsley | 6 | 62 | 6 | |||||||||||||||||||
 A Ritschard | 1 | 4 | WC | C Kingsley | 7 | 6 | |||||||||||||||||||||
| PR | C Harrison | 6 | 4 | PR | C Harrison | 5 | 4 | ||||||||||||||||||||
 A Dougaz | 1 | 0r | PR | C Harrison | 6 | 7 | |||||||||||||||||||||
| G Andreozzi | 1 | 4 | 8 | Z Svajda | 4 | 5 | |||||||||||||||||||||
| 8 | Z Svajda | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | T Sandgren | 6 | 6 | ||||||||||||||||||||||||
| Alt |  I Marchenko | 2 | 1 | 5 | T Sandgren | 60 | 1 | ||||||||||||||||||||
| R Peniston | 3 | R Peniston | 77 | 6 | |||||||||||||||||||||||
| Q | B Tomic | 1r | R Peniston | 7 | 3 | 6 | |||||||||||||||||||||
| WC | James Tracy | 6 | 7 | 4 | V Pospisil | 5 | 6 | 4 | |||||||||||||||||||
| WC | J Boulais | 3 | 5 | WC | J Tracy | 3 | 4 | ||||||||||||||||||||
| N Basavareddy | 5 | 6 | 5 | 4 | V Pospisil | 6 | 6 | ||||||||||||||||||||
| 4 | V Pospisil | 7 | 2 | 7 | R Peniston | 5 | 2 | ||||||||||||||||||||
| 7 | A Walton | 7 | 6 | 2 | D Kudla | 7 | 6 | ||||||||||||||||||||
| G Mpetshi Perricard | 5 | 4 | 7 | A Walton | 6 | 3 | 1 | ||||||||||||||||||||
| Alt | T Schoolkate | 6 | 6 | Alt | T Schoolkate | 4 | 6 | 6 | |||||||||||||||||||
 A Shelbayh | 4 | 3 | Alt | T Schoolkate | 2 | 4 | |||||||||||||||||||||
| M Krueger | 5 | 2 | 2 | D Kudla | 6 | 6 | |||||||||||||||||||||
| Alt |  M Geerts | 7 | 6 | Alt | M Geerts | 5 | 6 | 3 | |||||||||||||||||||
| Q | S Kirchheimer | 2 | 4 | 2 | D Kudla | 7 | 3 | 6 | |||||||||||||||||||
| 2 | D Kudla | 6 | 6 | ||||||||||||||||||||||||
Kei Nishikori was the two-time defending champion and successfully defended his title, defeating Kevin Anderson 6–4, 6–4 in the final.
Defending champion Roger Federer defeated Rafael Nadal in the final, 6–3, 5–7, 6–3 to win the singles tennis title at the 2015 Swiss Indoors. This was Federer's tenth consecutive final at the event.
Denis Kudla was the defending champion, but chose not to defend his title.
Darian King was the defending champion but chose not to defend his title.
Steve Johnson was the defending champion and successfully defended his title, defeating Tennys Sandgren in the final, 7–6(7–2), 2–6, 6–4.
Lucas Pouille was the defending champion, but lost in the semifinals to Milos Raonic.
Jérémy Chardy was the defending champion but chose not to defend his title.
Tommy Paul was the defending champion but chose not to defend his title.
Alexander Zverev defeated top seed Stefanos Tsitsipas in the final, 6–4, 7–6(7–3) to win the men's singles tennis title at the 2021 Mexican Open.
This was the first edition of the tournament, which was primarily organized to compensate for the cancellation of Asian tournaments in 2021 due to the COVID-19 pandemic.
Dan Evans was the defending champion but chose not to defend his title.
Stefanos Tsitsipas defeated Roberto Bautista Agut in the final, 6–4, 3–6, 7–6(7–2) to win the men's singles tennis title at the 2022 Mallorca Championships.
Arthur Rinderknech was the defending champion but chose not to defend his title.
Zsombor Piros was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Gabriel Diallo was the defending champion but chose not to defend his title.
Dan Evans defeated Tallon Griekspoor in the final, 7–5, 6–3 to win the men's singles tennis title at the 2023 Washington Open. It was his second ATP Tour singles title.
There was no defending champion as the previous edition of the tournament was canceled due to Hurricane Ian.
Zachary Svajda was the defending champion and successfully defended his title after defeating Adam Walton 6–2, 6–2 in the final.
Michael Mmoh was the defending champion but chose not to defend his title.