| Singles | |
|---|---|
| 2018 ATP Lyon Open | |
| Champion |  Dominic Thiem |
| Runner-up |  Gilles Simon |
| Score | 3–6, 7–6(7–2), 6–1 |
| Draw | 28 (4 Q / 3 WC ) |
| Seeds | 8 |
Jo-Wilfried Tsonga was the defending champion, but due to injury did not defend his title.
Dominic Thiem won the title, defeating Gilles Simon in the final, 3–6, 7–6(7–2), 6–1.
The top four seeds receive a bye into the second round.
Dominic Thiem (champion)
John Isner (quarterfinals) Jack Sock (second round)
Chung Hyeon (withdrew) Adrian Mannarino (first round) Gaël Monfils (first round)
João Sousa (first round)
John Millman (withdrew)| Semifinals | Final | ||||||||||||
| 1 | Dominic Thiem | 6 | 5 | 6 | |||||||||
 Dušan Lajović | 4 | 7 | 4 | ||||||||||
| 1 | Dominic Thiem | 3 | 77 | 6 | |||||||||
| Gilles Simon | 6 | 62 | 1 | ||||||||||
| Gilles Simon | 6 | 78 | |||||||||||
 Cameron Norrie | 1 | 66 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | D Thiem | 6 | 6 | ||||||||||||||||||||||||
 R Carballés Baena | 77 | 64 | 6 | R Carballés Baena | 2 | 4 | |||||||||||||||||||||
| Q | L Đere | 63 | 77 | 3 | 1 | D Thiem | 64 | 77 | 6 | ||||||||||||||||||
| WC | C Moutet | 77 | 4 | 3 | G García López | 77 | 60 | 4 | |||||||||||||||||||
| C Hemery | 64 | 6 | 6 | C Hemery | 64 | 3 | |||||||||||||||||||||
| G García López | 6 | 4 | 6 | G García López | 77 | 6 | |||||||||||||||||||||
| 5/WC | A Mannarino | 3 | 6 | 1 | 1 | D Thiem | 6 | 5 | 6 | ||||||||||||||||||
| D Lajović | 4 | 7 | 4 | ||||||||||||||||||||||||
| 3 | J Sock | 66 | 2 | ||||||||||||||||||||||||
| T Fritz | 6 | 6 | T Fritz | 78 | 6 | ||||||||||||||||||||||
| M Ebden | 4 | 2 | T Fritz | 5 | 1 | ||||||||||||||||||||||
| D Lajović | 6 | 6 | D Lajović | 7 | 6 | ||||||||||||||||||||||
 H Zeballos | 4 | 2 | D Lajović | 6 | 7 | ||||||||||||||||||||||
| Q |  F Horanský | 6 | 3 | 6 | Q | F Horanský | 4 | 5 | |||||||||||||||||||
| 7 | J Sousa | 4 | 6 | 4 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| LL | F Coria | 4 | 6 | 7 | |||||||||||||||||||||||
| N Kicker | 6 | 1 | 5 | LL | F Coria | 2 | 3 | ||||||||||||||||||||
| WC | G Barrère | 2 | 3 |  M Kukushkin | 6 | 6 | |||||||||||||||||||||
| M Kukushkin | 6 | 6 | M Kukushkin | 6 | 4 | 65 | |||||||||||||||||||||
| G Simon | 6 | 6 | G Simon | 4 | 6 | 77 | |||||||||||||||||||||
| Q | J Samper Montaña | 4 | 2 | G Simon | 77 | 6 | |||||||||||||||||||||
| LL |  J De Loore | 63 | 2 | ||||||||||||||||||||||||
| G Simon | 6 | 78 | |||||||||||||||||||||||||
| 6 | G Monfils | 6 | 4 | 4 | C Norrie | 1 | 66 | ||||||||||||||||||||
 M Marterer | 2 | 6 | 6 | M Marterer | 1 | 4 | |||||||||||||||||||||
| C Norrie | 77 | 6 | C Norrie | 6 | 6 | ||||||||||||||||||||||
| Q |  J Hernández-Fernández | 65 | 1 | C Norrie | 77 | 6 | |||||||||||||||||||||
| F Delbonis | 79 | 5 | 4 | 2 | J Isner | 61 | 4 | ||||||||||||||||||||
 R Albot | 67 | 7 | 6 | R Albot | 63 | 3 | |||||||||||||||||||||
| 2 | J Isner | 77 | 6 | ||||||||||||||||||||||||
Laslo Đere (qualified)
Roberto Quiroz (first round) José Hernández-Fernández (qualified)
Alejandro González (first round) Maxime Janvier (first round)
Steven Diez (first round) Federico Coria (qualifying competition, lucky loser)
Evgeny Karlovskiy (first round)| First round | Qualifying competition | ||||||||||||
| 1 | Laslo Đere | 6 | 6 | ||||||||||
| Yannick Mertens | 4 | 3 | |||||||||||
| 1 | Laslo Đere | 7 | 6 | ||||||||||
| Joris De Loore | 5 | 4 | |||||||||||
| Joris De Loore | 4 | 6 | 7 | ||||||||||
| 5 | Maxime Janvier | 6 | 3 | 5 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 2 | Roberto Quiroz | 4 | 2 | ||||||||||
| Filip Horanský | 6 | 6 | |||||||||||
| Filip Horanský | 6 | 6 | |||||||||||
| WC | Antoine Cornut Chauvinc | 1 | 3 | ||||||||||
| WC | Antoine Cornut Chauvinc | 5 | 6 | 6 | |||||||||
| 6 | Steven Diez | 7 | 2 | 1 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 3 | José Hernández-Fernández | 77 | 6 | ||||||||||
| Tristan Lamasine | 62 | 4 | |||||||||||
| 3 | José Hernández-Fernández | 6 | 6 | ||||||||||
| 7 | Federico Coria | 2 | 4 | ||||||||||
| Axel Michon | 3 | 0 | |||||||||||
| 7 | Federico Coria | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 4 | Alejandro González | 6 | 3 | 5 | |||||||||
| Jordi Samper Montaña | 3 | 6 | 7 | ||||||||||
| Jordi Samper Montaña | 6 | 4 | 6 | ||||||||||
| WC | Matteo Martineau | 3 | 6 | 3 | |||||||||
| WC | Matteo Martineau | 6 | 3 | 6 | |||||||||
| 8 | Evgeny Karlovskiy | 3 | 6 | 3 | |||||||||
Pablo Cuevas was the last edition champion, but he chose to defend another of his previous title in Båstad which was held simultaneously with the Croatia Open Umag this year.
Federico Gaio was the defending champion but lost in the second round to Federico Coria.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Roberto Bautista Agut was the defending champion, but withdrew before the tournament began.
Diego Schwartzman was the defending champion, but he retired in the first round against Pablo Cuevas.
Dominic Thiem defeated Roger Federer in the final, 3–6, 6–3, 7–5 to win the men's singles tennis title at the 2019 Indian Wells Masters. It was his maiden ATP Tour Masters 1000 title, and he became the first Austrian to win a Masters title since Thomas Muster won the 1997 Miami Open.
Dominic Thiem defeated Daniil Medvedev in the final, 6–4, 6–0, to win the singles title at the 2019 Barcelona Open.
Nikoloz Basilashvili was the defending champion and successfully defended his title, defeating Andrey Rublev in the final, 7–5, 4–6, 6–3. En route to doing so, Basilashvili saved two match points against Alexander Zverev in the semifinals.
Kevin Anderson was the defending champion, but could not participate this year due to a knee injury.
Juan Ignacio Londero was the defending champion, but lost to Laslo Đere in the quarterfinals.
Marco Cecchinato was the defending champion, but lost in the first round to Roberto Carballés Baena.
Laslo Đere was the defending champion, but withdrew with an abdominal injury before the tournament began.
Dominic Thiem was the defending champion and chose not to defend his title, as he was still competing at the 2020 US Open.
This was the first edition of the tournament, primarily organised due to the cancellation of many tournaments in 2020, due to the COVID-19 pandemic.
Daniil Medvedev defeated Alexander Zverev in the final, 5–7, 6–4, 6–1 to win the singles tennis title at the 2020 Paris Masters.
Cristian Garín defeated Facundo Bagnis in the final, 6–4, 6–7(3–7), 7–5 to capture the men's singles tennis title at the 2021 Chile Open.
Rafael Nadal defeated the defending champion Novak Djokovic in the final, 7–5, 1–6, 6–3 to win the men's singles tennis title at the 2021 Italian Open. It was his record-extending 10th Italian Open title and record-equaling 36th Masters 1000 title overall. Nadal saved two match points en route to the title, in his third round match against Denis Shapovalov. This was also the fourth time that Nadal had won a tournament on 10 or more occasions, making him the only tennis player with the feat.
Miomir Kecmanović was the defending champion, but chose to compete at the Summer Olympics instead.
Novak Djokovic defeated Stefanos Tsitsipas in the final, 6–0, 7–6(7–5) to win the men's singles tennis title at the 2022 Italian Open. It was his sixth Italian Open title and record-extending 38th Masters 1000 title overall. Djokovic did not lose a set during the tournament, and won his 1000th ATP Tour-level career match against Casper Ruud in the semifinals.
Sebastián Báez defeated Dominic Thiem in the final, 6–3, 6–1 to win the men's singles tennis title at the 2023 Generali Open Kitzbühel. It was his third ATP Tour singles title. It was Thiem's first appearance in an ATP Tour final since the 2020 ATP Finals.