| Men's singles | |
|---|---|
| 2019 Open Castilla y León | |
| Champion |  Nicola Kuhn |
| Runner-up |  Pavel Kotov |
| Score | 6–2, 7–6(7–4) |
Ugo Humbert was the defending champion but chose not to defend his title. [1]
Nicola Kuhn won the title after defeating Pavel Kotov 6–2, 7–6(7–4) in the final.
All seeds receive a bye into the second round.
Blaž Rola (quarterfinals)
Tallon Griekspoor (second round)
Constant Lestienne (quarterfinals)
Andrea Arnaboldi (second round) Nicola Kuhn (champion) Matteo Viola (third round) Luca Vanni (second round) Kenny de Schepper (second round) Roberto Ortega Olmedo (third round) Pavel Kotov (final) Oriol Roca Batalla (second round) Scott Griekspoor (second round) Andrea Vavassori (second round) Baptiste Crepatte (third round)
Khumoyun Sultanov (second round)
Aldin Šetkić (second round)| Quarterfinals | Semifinals | Final | ||||||||||||||||||
| 1 | Blaž Rola | 77 | 68 | 4 | ||||||||||||||||
| Hugo Grenier | 65 | 710 | 6 | |||||||||||||||||
| Hugo Grenier | 2 | 5 | ||||||||||||||||||
| 10 | Pavel Kotov | 6 | 7 | |||||||||||||||||
| 3 | Constant Lestienne | 6 | 3 | 65 | ||||||||||||||||
| 10 | Pavel Kotov | 2 | 6 | 77 | ||||||||||||||||
| 10 | Pavel Kotov | 2 | 64 | |||||||||||||||||
| 5 | Nicola Kuhn | 6 | 77 | |||||||||||||||||
| 5 | Nicola Kuhn | 7 | 6 | |||||||||||||||||
 Altuğ Çelikbilek | 5 | 4 | ||||||||||||||||||
| 5 | Nicola Kuhn | 6 | 6 | |||||||||||||||||
| ITF |  Markus Eriksson | 2 | 2 | |||||||||||||||||
| ITF | Markus Eriksson | 65 | 6 | 6 | ||||||||||||||||
| Antoine Escoffier | 77 | 2 | 3 | |||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 1 | B Rola | 6 | 6 | ||||||||||||||||||||||||
| ITF | K Kravchuk | 3 | 6 | 77 | ITF | K Kravchuk | 4 | 4 | |||||||||||||||||||
| WC | Í Cervantes | 6 | 1 | 64 | 1 | B Rola | 7 | 6 | |||||||||||||||||||
| G Granollers | 65 | 4 | 14 | B Crepatte | 5 | 1 | |||||||||||||||||||||
| Q |  F Gil | 77 | 6 | Q | F Gil | 4 | 1 | ||||||||||||||||||||
| 14 | Baptiste Crepatte | 6 | 6 | ||||||||||||||||||||||||
| 1 | B Rola | 77 | 68 | 4 | |||||||||||||||||||||||
| H Grenier | 65 | 710 | 6 | ||||||||||||||||||||||||
| 11 | O Roca Batalla | 4 | 2 | ||||||||||||||||||||||||
| R Ojeda Lara | 61 | 3 | A Basso | 6 | 6 | ||||||||||||||||||||||
| A Basso | 77 | 6 | A Basso | 77 | 3 | 65 | |||||||||||||||||||||
| H Grenier | 6 | 6 | H Grenier | 63 | 6 | 77 | |||||||||||||||||||||
 Y He | 0 | 2 | H Grenier | 77 | 6 | ||||||||||||||||||||||
| 7 | L Vanni | 65 | 3 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 3 | C Lestienne | 6 | 6 | ||||||||||||||||||||||||
| A Bega | 3 | 6 | 0 | A Artuñedo | 4 | 1 | |||||||||||||||||||||
| A Artuñedo | 6 | 3 | 6 | 3 | C Lestienne | 78 | 6 | ||||||||||||||||||||
| ITF | B van de Zandschulp | 5 | 5 |  T Simon | 66 | 2 | |||||||||||||||||||||
| Tobias Simon | 7 | 7 | T Simon | 7 | 6 | ||||||||||||||||||||||
| 16 | A Šetkić | 5 | 4 | ||||||||||||||||||||||||
| 3 | C Lestienne | 6 | 3 | 65 | |||||||||||||||||||||||
| 10 | P Kotov | 2 | 6 | 77 | |||||||||||||||||||||||
| 10 | P Kotov | 3 | 6 | 7 | |||||||||||||||||||||||
| A Rinderknech | 63 | 62 | M Martineau | 6 | 3 | 5 | |||||||||||||||||||||
| M Martineau | 77 | 77 | 10 | P Kotov | 6 | 6 | |||||||||||||||||||||
| WC | N Álvarez Varona | 2 | 3 | 6 | M Viola | 1 | 3 | ||||||||||||||||||||
| ITF |  F Meligeni Alves | 6 | 6 | ITF | F Meligeni Alves | 2 | 1 | ||||||||||||||||||||
| 6 | M Viola | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 5 | N Kuhn | 6 | 6 | ||||||||||||||||||||||||
| PR |  N Barrientos | 6 | 7 | PR | N Barrientos | 4 | 3 | ||||||||||||||||||||
| D Added | 4 | 5 | 5 | N Kuhn | 77 | 6 | |||||||||||||||||||||
| WC | Miguel Damas | 78 | 68 | 2 |  I Marchenko | 64 | 1 | ||||||||||||||||||||
| I Marchenko | 66 | 710 | 6 | I Marchenko | 77 | 6 | |||||||||||||||||||||
| 12 | S Griekspoor | 62 | 4 | ||||||||||||||||||||||||
| 5 | N Kuhn | 7 | 6 | ||||||||||||||||||||||||
| A Çelikbilek | 5 | 4 | |||||||||||||||||||||||||
| 13 | A Vavassori | 710 | 2 | 4 | |||||||||||||||||||||||
| A Çelikbilek | 6 | 6 | A Çelikbilek | 68 | 6 | 6 | |||||||||||||||||||||
| WC |  Digvijaypratap Singh | 4 | 4 | A Çelikbilek | 6 | 4 | 6 | ||||||||||||||||||||
| WC | Mario González Fernández | 6 | 2 | 4 | C Gómez-Herrera | 4 | 6 | 2 | |||||||||||||||||||
| C Gómez-Herrera | 0 | 6 | 6 | C Gómez-Herrera | 6 | 2 | 6 | ||||||||||||||||||||
| 4 | A Arnaboldi | 2 | 6 | 4 | |||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 8 | K de Schepper | 4 | 77 | 3 | |||||||||||||||||||||||
| ITF | M Eriksson | 6 | 6 | ITF | M Eriksson | 6 | 62 | 6 | |||||||||||||||||||
| Tom Jomby | 3 | 1 | ITF | M Eriksson | 1 | 6 | 7 | ||||||||||||||||||||
| A Dubrivnyy | 63 | 6 | 2 | 9 | R Ortega Olmedo | 6 | 1 | 5 | |||||||||||||||||||
| J Ocleppo | 77 | 4 | 6 | J Ocleppo | 77 | 3 | 4 | ||||||||||||||||||||
| 9 | R Ortega Olmedo | 61 | 6 | 6 | |||||||||||||||||||||||
| ITF | M Eriksson | 65 | 6 | 6 | |||||||||||||||||||||||
| A Escoffier | 77 | 2 | 3 | ||||||||||||||||||||||||
| 15 | K Sultanov | 6 | 2 | 64 | |||||||||||||||||||||||
| A Escoffier | 6 | 6 | A Escoffier | 1 | 6 | 77 | |||||||||||||||||||||
| Q | W Trusendi | 2 | 0 | A Escoffier | 6 | 6 | |||||||||||||||||||||
| ITF | O Luz | 63 | 69 | C Boluda-Purkiss | 4 | 4 | |||||||||||||||||||||
| Carlos Boluda-Purkiss | 77 | 711 | C Boluda-Purkiss | 4 | 6 | 6 | |||||||||||||||||||||
| 2 | T Griekspoor | 6 | 0 | 3 | |||||||||||||||||||||||
Nicolas Mahut and Vasek Pospisil were the defending champions, but Pospisil chose not to participate this year. Mahut played alongside Pierre-Hugues Herbert, but lost in the semifinals to Ivan Dodig and Marcel Granollers.
Nikola Milojević was the defending champion but chose not to defend his title.
This was the first edition of the tournament as a Challenger event.
Ričardas Berankis was the defending champion but chose not to defend his title.
Ugo Humbert was the defending champion but chose not to defend his title.
Gianluca Mager was the defending champion but chose not to defend his title.
Lorenzo Sonego was the defending champion, but chose not to participate. Alex de Minaur defeated Alexander Bublik in the final, 2–0, after Bublik retired with an ankle injury.
Tommy Paul defeated the defending champion, Denis Shapovalov, in the final, 6–4, 2–6, 6–4, to win the singles title at the 2021 Stockholm Open. This was Paul's first ATP Tour title.
Andrey Rublev defeated Félix Auger-Aliassime in the final, 7–5, 7–6(7–4) to win the singles title at the 2022 Open 13 Provence.
David Goffin defeated Alex Molčan in the final, 3–6, 6–3, 6–3 to win the singles tennis title at the 2022 Grand Prix Hassan II. It was Goffin's sixth ATP singles title.
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.
Roberto Bautista Agut defeated Filip Misolic in the final, 6–2, 6–2 to win the singles tennis title at the 2022 Generali Open Kitzbühel.
Adrian Mannarino defeated Laslo Đere in the final, 7–6(7–1), 6–4 to win the singles tennis title at the 2022 Winston-Salem Open. Mannarino saved four match points en route to the title, in his first-round match against Christopher O'Connell.
Novak Djokovic defeated Stefanos Tsitsipas in the final, 6–3, 6–4 to win the singles tennis title at the 2022 Astana Open. It was his 90th ATP Tour-level singles title.
Holger Rune defeated Stefanos Tsitsipas in the final, 6–4, 6–4 to win the singles tennis title at the 2022 Stockholm Open. It was his second career ATP Tour singles title.
Lorenzo Musetti defeated Matteo Berrettini in the final, 7–6(7–5), 6–2 to win the singles tennis title at the 2022 Napoli Cup. It was his second career ATP Tour singles title.
Tallon Griekspoor and Botic van de Zandschulp defeated Rohan Bopanna and Matwé Middelkoop in the final, 3–6, 6–3, [10–5] to win the doubles tennis title at the 2022 European Open.
Defending champion Carlos Alcaraz defeated Jan-Lennard Struff in the final, 6–4, 3–6, 6–3 to win the men's singles tennis title at the 2023 Madrid Open. It was his fourth Masters 1000 title. Struff was the first lucky loser to reach a Masters final.
Tallon Griekspoor defeated Jordan Thompson in the final, 6–7(4–7), 7–6(7–3), 6–3 to win the men's singles tennis title at the 2023 Libéma Open. It was his second ATP Tour title.
Gaël Monfils defeated Pavel Kotov in the final, 4–6, 7–6(8–6), 6–3 to win the singles tennis title at the 2023 Stockholm Open. It was his twelfth career ATP Tour singles title.