| Urbana Challenger – Singles | |
|---|---|
| 2023 Champaign–Urbana Challenger | |
| Champion |  Patrick Kypson |
| Runner-up | Alex Michelsen |
| Score | 6–4, 6–3 |
Ben Shelton was the defending champion [1] but chose not to defend his title.
Patrick Kypson won the title after defeating Alex Michelsen 6–4, 6–3 in the final.
Aleksandar Kovacevic (quarterfinals) Alex Michelsen (final) Emilio Nava (first round)
Titouan Droguet (semifinals) Denis Kudla (first round, retired)
Beibit Zhukayev (second round) Patrick Kypson (champion) Martin Damm (quarterfinals)| Semifinals | Final | ||||||||||||
| 7 | Patrick Kypson | 6 | 6 | ||||||||||
| WC | Ethan Quinn | 4 | 2 | ||||||||||
| 7 | Patrick Kypson | 6 | 6 | ||||||||||
| 2 | Alex Michelsen | 4 | 3 | ||||||||||
| 4 | Titouan Droguet | 6 | 4 | 3 | |||||||||
| 2 | Alex Michelsen | 2 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Kovacevic | 6 | 2 | 6 | |||||||||||||||||||||||
| Q | C Williams | 3 | 6 | 4 | 1 | A Kovacevic | 77 | 6 | |||||||||||||||||||
| Alt | S Kozlov | 6 | 3 | 4 | WC |  K Ozoliņš | 65 | 3 | |||||||||||||||||||
| WC | K Ozoliņš | 2 | 6 | 6 | 1 | A Kovacevic | 62 | 6 | 3 | ||||||||||||||||||
| Q | Hunter Heck | 3 | 4 | 7 | P Kypson | 77 | 4 | 6 | |||||||||||||||||||
| WC |  Kenta Miyoshi | 6 | 6 | WC | K Miyoshi | 3 | 1 | ||||||||||||||||||||
| Q |  Mark Whitehouse | 1 | 65 | 7 | P Kypson | 6 | 6 | ||||||||||||||||||||
| 7 | P Kypson | 6 | 77 | 7 | P Kypson | 6 | 6 | ||||||||||||||||||||
| 3 | Em Nava | 3 | 2 | WC | E Quinn | 4 | 2 | ||||||||||||||||||||
| WC | E Quinn | 6 | 6 | WC | E Quinn | 6 | 6 | ||||||||||||||||||||
| Alt |  E Karlovskiy | 5 | 4r | S Kirchheimer | 1 | 4 | |||||||||||||||||||||
| S Kirchheimer | 7 | 5 | WC | E Quinn | 6 | 6 | |||||||||||||||||||||
 N Serdarušić | 6 | 1 | 6 | N Serdarušić | 3 | 3 | |||||||||||||||||||||
| Aidan Mayo | 3 | 6 | 3 | N Serdarušić | 77 | 6 | |||||||||||||||||||||
 Enrico Dalla Valle | 1 | 1 | 6 | B Zhukayev | 65 | 4 | |||||||||||||||||||||
| 6 | B Zhukayev | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | D Kudla | 77 | 5 | 0r | |||||||||||||||||||||||
| M Krueger | 64 | 7 | 0 | M Krueger | 77 | 6 | |||||||||||||||||||||
 C Rodesch | 7 | 4 | 4 | Q | A Rybakov | 65 | 1 | ||||||||||||||||||||
| Q | A Rybakov | 5 | 6 | 6 | M Krueger | 4 | 1 | ||||||||||||||||||||
| B Holt | 5 | 6 | 6 | 4 | T Droguet | 6 | 6 | ||||||||||||||||||||
| Q |  I Montes de la Torre | 7 | 0 | 1 | B Holt | 4 | 3 | ||||||||||||||||||||
 V Durasovic | 2 | 3 | 4 | T Droguet | 6 | 6 | |||||||||||||||||||||
| 4 | T Droguet | 6 | 6 | 4 | T Droguet | 6 | 4 | 3 | |||||||||||||||||||
| 8 | M Damm | 77 | 6 | 2 | A Michelsen | 2 | 6 | 6 | |||||||||||||||||||
| Q | A Perez | 63 | 4 | 8 | M Damm | 6 | 6 | ||||||||||||||||||||
| G Debru | 67 | 6 | 64 | Alt |  M Rosenkranz | 3 | 4 | ||||||||||||||||||||
| Alt | M Rosenkranz | 79 | 3 | 77 | 8 | M Damm | 1 | 6 | 4 | ||||||||||||||||||
| A McHugh | 2 | 6 | 3 | 2 | A Michelsen | 6 | 1 | 6 | |||||||||||||||||||
| Sebastian Fanselow | 6 | 4 | 6 | S Fanselow | 3 | 2 | |||||||||||||||||||||
 B Tomic | 4 | 0 | 2 | A Michelsen | 6 | 6 | |||||||||||||||||||||
| 2 | A Michelsen | 6 | 6 | ||||||||||||||||||||||||
Defending champion Patrick Rafter defeated Mark Philippoussis in the final, 6–3, 3–6, 6–2, 6–0 to win the men's singles tennis title at the 1998 US Open.
Pete Sampras defeated the defending champion Patrick Rafter in a rematch of the previous year's final, 7–6(9–7), 6–3 to win the singles tennis title at the 1999 Cincinnati Masters.
Grant Connell and Glenn Michibata were the defending champions, but lost in the quarterfinals this year.
Taylor Harry Fritz was the defending champion, but is no longer eligible to compete.
Félix Auger-Aliassime was the defending champion, but chose not to participate.
Juan Carlos Aguilar and Felipe Meligeni Alves were the defending champions, but both players were ineligible to participate.
Patrick Galbraith and Todd Witsken were the defending champions, but competed this year with different partners.
Bruno Kuzuhara and Coleman Wong defeated Alex Michelsen and Adolfo Daniel Vallejo in the final, 6–3, 7–6(7–3) to win the boys' doubles title at the 2022 Australian Open. Wong became the first Hongkonger win an Australian Open title, and the first Hongkonger to win two titles at majors, having previously won the junior doubles at the 2021 US Open.
Bruno Kuzuhara defeated Jakub Menšík in the final, 7–6(7–4), 6–7(6–8), 7–5 to win the boys' singles title at the 2022 Australian Open.
Sebastian Gorzny and Alex Michelsen defeated Gabriel Debru and Paul Inchauspé in the final, 7–6(7–5), 6–3 to win the boys' doubles tennis title at the 2022 Wimbledon Championships.
Defending champions Rajeev Ram and Joe Salisbury defeated Wesley Koolhof and Neal Skupski in the final, 7–6(7–4), 7–5 to win the men's doubles tennis title at the 2022 US Open. They became the second team in the Open Era to defend the US Open title, after Todd Woodbridge and Mark Woodforde in 1996. It was both men's fifth major title.
Tommy Paul was the defending champion but chose not to defend his title.
Jack Sock was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Stefanos Tsitsipas defeated Alex de Minaur in the final, 6–3, 6–4 to win the singles title at the 2023 Los Cabos Open. It was his tenth ATP Tour singles title.
Adam Walton was the defending champion but lost in the second round to Patrick Kypson.
Michael Mmoh was the defending champion but chose not to defend his title.
Ben Shelton was the defending champion but chose not to defend his title.
Ben Shelton was the defending champion but chose not to defend his title.
Hunter Reese and Tennys Sandgren were the defending champions but only Sandgren chose to defend his title, partnering Marcus Willis. Sandgren lost in the quarterfinals to Evgeny Karlovskiy and Nino Serdarušić.