| Singles | |
|---|---|
| 2023 Cary Challenger | |
| Champion |  Adam Walton |
| Runner-up |  Nicolas Moreno de Alboran |
| Score | 6–4, 3–6, 7–5 |
Michael Mmoh was the defending champion [1] but chose not to defend his title.
Adam Walton won the title after defeating Nicolas Moreno de Alboran 6–4, 3–6, 7–5 in the final.
Alexander Shevchenko (first round) Rinky Hijikata (quarterfinals)
Liam Broady (semifinals) Nicolas Moreno de Alboran (final)
Arthur Cazaux (second round)
Gijs Brouwer (second round)
Emilio Gómez (first round)
Leandro Riedi (first round)| Semifinals | Final | ||||||||||||
| WC | Patrick Kypson | 712 | 3 | 1 | |||||||||
| 4 | Nicolas Moreno de Alboran | 610 | 6 | 6 | |||||||||
| 4 | Nicolas Moreno de Alboran | 4 | 6 | 5 | |||||||||
| Adam Walton | 6 | 3 | 7 | ||||||||||
| 3 | Liam Broady | 4 | 5 | ||||||||||
| Adam Walton | 6 | 7 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Shevchenko | 6 | 3 | 64 | |||||||||||||||||||||||
 S-c Hong | 3 | 6 | 77 | S-c Hong | 4 | 4 | |||||||||||||||||||||
| Q | K Smith | 3 | 2 | WC | P Kypson | 6 | 6 | ||||||||||||||||||||
| WC | P Kypson | 6 | 6 | WC | P Kypson | 6 | 77 | ||||||||||||||||||||
 T-l Wu | 4 | 6 | 6 | T-l Wu | 3 | 64 | |||||||||||||||||||||
| LL |  Yuki Mochizuki | 6 | 3 | 2 | T-l Wu | 6 | 3 | 6 | |||||||||||||||||||
 AD Vallejo | 6 | 6 | AD Vallejo | 1 | 6 | 1 | |||||||||||||||||||||
| 8 | L Riedi | 3 | 4 | WC | P Kypson | 712 | 3 | 1 | |||||||||||||||||||
| 4 | N Moreno de Alboran | 6 | 7 | 4 | N Moreno de Alboran | 610 | 6 | 6 | |||||||||||||||||||
| Q | Quinn Vandecasteele | 3 | 5 | 4 | N Moreno de Alboran | 6 | 77 | ||||||||||||||||||||
| Q | Stefan Dostanic | 77 | 6 | Q | S Dostanic | 2 | 65 | ||||||||||||||||||||
| Z Svajda | 65 | 3 | 4 | N Moreno de Alboran | 6 | 6 | |||||||||||||||||||||
| Q | Karl Poling | 2 | 6 | 5 | Alt | R Peniston | 3 | 4 | |||||||||||||||||||
| Alt | R Peniston | 6 | 1 | 7 | Alt | R Peniston | 5 | 7 | 6 | ||||||||||||||||||
| WC | E Quinn | 77 | 3 | 1 | 6 | G Brouwer | 7 | 5 | 2 | ||||||||||||||||||
| 6 | G Brouwer | 62 | 6 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | A Cazaux | 6 | 6 | ||||||||||||||||||||||||
 A Shelbayh | 3 | 0 | 5 | A Cazaux | 4 | 64 | |||||||||||||||||||||
| S Mochizuki | 77 | 3 | 2 |  L Harris | 6 | 77 | |||||||||||||||||||||
| L Harris | 64 | 6 | 6 | L Harris | 3 | 4 | |||||||||||||||||||||
| T Sandgren | 3 | 6 | 3 | 3 | L Broady | 6 | 6 | ||||||||||||||||||||
| Q | B Ellis | 6 | 1 | 6 | Q | B Ellis | 3 | 3 | |||||||||||||||||||
| E Spizzirri | 2 | 2 | 3 | L Broady | 6 | 6 | |||||||||||||||||||||
| 3 | L Broady | 6 | 6 | 3 | L Broady | 4 | 5 | ||||||||||||||||||||
| 7 | E Gómez | 5 | 65 | A Walton | 6 | 7 | |||||||||||||||||||||
| Q | B Harris | 7 | 77 | Q | B Harris | 6 | 67 | 63 | |||||||||||||||||||
 B Zhukayev | 4 | 3 | A Walton | 3 | 79 | 77 | |||||||||||||||||||||
| A Walton | 6 | 6 | A Walton | 6 | 6 | ||||||||||||||||||||||
| Alt | B Fratangelo | 3 | 6 | 2 | 2/WC | R Hijikata | 2 | 4 | |||||||||||||||||||
| A Ritschard | 6 | 4 | 6 | A Ritschard | 64 | 3 | |||||||||||||||||||||
| S Shimabukuro | 3 | 2 | 2/WC | R Hijikata | 77 | 6 | |||||||||||||||||||||
| 2/WC | R Hijikata | 6 | 6 | ||||||||||||||||||||||||
Kyle Edmund and Frederico Ferreira Silva were the defending champions, but were not eligible to compete this year.
Borna Ćorić was the defending champion, having won the event in 2013, but elevated to Men's Singles instead as a qualifier.
Omar Jasika was the defending champion, but he chose not to participate. Taylor Harry Fritz won the title, defeating Tommy Paul in the final, 6–2, 6–7(4–7), 6–2.
Ernesto Escobedo was the defending champion but chose not to defend his title.
Cameron Norrie was the defending champion but chose not to defend his title.
Nick Kyrgios defeated Daniil Medvedev in the final, 7–6(8–6), 7–6(7–4) to win the men's singles tennis title at the 2019 Washington Open. Kyrgios saved a match point in the semifinals against Stefanos Tsitsipas.
Emilio Gómez was the defending champion and successfully defended his title, defeating Nicolas Moreno de Alboran 6–7(2–7), 7–6(7–4), 7–5 in the final.
Stefano Travaglia was the defending champion but chose not to defend his title.
Cameron Norrie defeated Alex Molčan in the final, 6–3, 6–7(3–7), 6–1 to win the singles tennis title at the 2022 ATP Lyon Open. Norrie became the first Briton to win a clay court title on the ATP Tour since 2016.
Franco Agamenone was the defending champion but chose not to defend his title.
Thiago Monteiro was the defending champion but chose not to defend his title.
Corentin Moutet was the defending champion but chose not to defend his title.
Roberto Carballés Baena defeated Alexandre Müller in the final, 4–6, 7–6(7–3), 6–2 to win the men's singles tennis title at the 2023 Grand Prix Hassan II. It was his second ATP Tour singles title.
Matteo Arnaldi was the defending champion but chose not to defend his title.
Jason Kubler was the defending champion but chose not to defend his title.
Andrew Harris and Christian Harrison were the defending champions but only Harris chose to defend his title, partnering Alex Bolt. Harris lost in the first round to Yuta Shimizu and Yasutaka Uchiyama.
This was the first edition of the tournament.
This was the first edition of the tournament.
Constant Lestienne was the defending champion but chose not to defend his title.
Hugo Grenier was the defending champion but retired from his first round match against Dominik Palán.