| Singles | |
|---|---|
| 2017 Open du Pays d'Aix | |
| Champion |  Frances Tiafoe |
| Runner-up |  Jérémy Chardy |
| Final score | 6–3, 4–6, 7–6(7–5) |
Thiago Monteiro was the defending champion but chose not to defend his title.
Frances Tiafoe won the title after defeating Jérémy Chardy 6–3, 4–6, 7–6(7–5) in the final.
Malek Jaziri (quarterfinals)
Rogério Dutra Silva (second round) Jérémy Chardy (final) Frances Tiafoe (champion)
Dušan Lajović (first round)
Renzo Olivo (first round)
Norbert Gombos (second round) Julien Benneteau (quarterfinals)| Semifinals | Final | ||||||||||||
| Reilly Opelka | 4 | 3 | |||||||||||
| 4 | Frances Tiafoe | 6 | 6 | ||||||||||
| 4 | Frances Tiafoe | 6 | 4 | 77 | |||||||||
| 3 | Jérémy Chardy | 3 | 6 | 65 | |||||||||
| 3 | Jérémy Chardy | 6 | 6 | ||||||||||
| Alt |  Pedro Sousa | 4 | 1 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Jaziri | 6 | 5 | 6 | |||||||||||||||||||||||
| C Lestienne | 4 | 7 | 4 | 1 | M Jaziri | 7 | 6 | ||||||||||||||||||||
| LL | Louis Tessa | 0 | 65 |  A Rublev | 5 | 3 | |||||||||||||||||||||
| A Rublev | 6 | 77 | 1 | M Jaziri | 3 | 4 | |||||||||||||||||||||
 E Ymer | 6 | 6 | R Opelka | 6 | 6 | ||||||||||||||||||||||
| Q | E Benchetrit | 4 | 2 | E Ymer | 63 | 68 | |||||||||||||||||||||
| R Opelka | 3 | 6 | 6 | R Opelka | 77 | 710 | |||||||||||||||||||||
| 5 | D Lajović | 6 | 4 | 2 | R Opelka | 4 | 3 | ||||||||||||||||||||
| 4 | F Tiafoe | 6 | 62 | 7 | 4 | F Tiafoe | 6 | 6 | |||||||||||||||||||
 A De Greef | 2 | 77 | 5 | 4 | F Tiafoe | 6 | 6 | ||||||||||||||||||||
| Q | M Hamou | 6 | 6 | Q | M Hamou | 4 | 3 | ||||||||||||||||||||
| WC | C Moutet | 3 | 4 | 4 | F Tiafoe | 6 | 77 | ||||||||||||||||||||
| D Kudla | 3 | 2 | Q Halys | 3 | 62 | ||||||||||||||||||||||
| Q Halys | 6 | 6 | Q Halys | 77 | 2 | 6 | |||||||||||||||||||||
| LL | Clément Geens | 6 | 5 | 6 | LL | C Geens | 63 | 6 | 4 | ||||||||||||||||||
| 6 | R Olivo | 3 | 7 | 3 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | N Gombos | 4 | 6 | 6 | |||||||||||||||||||||||
| K de Schepper | 6 | 4 | 4 | 7 | N Gombos | 65 | 62 | ||||||||||||||||||||
| B Fratangelo | 7 | 6 | B Fratangelo | 77 | 77 | ||||||||||||||||||||||
| Q | A Molteni | 5 | 4 | B Fratangelo | 3 | 2 | |||||||||||||||||||||
| LL | A Michon | 63 | 63 | 3 | J Chardy | 6 | 6 | ||||||||||||||||||||
 L Rosol | 77 | 77 | L Rosol | 1 | 3 | ||||||||||||||||||||||
 C Garin | 5 | 6 | 2 | 3 | J Chardy | 6 | 6 | ||||||||||||||||||||
| 3 | J Chardy | 7 | 4 | 6 | 3 | J Chardy | 6 | 6 | |||||||||||||||||||
| 8 | J Benneteau | 3 | 6 | 6 | Alt | P Sousa | 4 | 1 | |||||||||||||||||||
| SE | T Paul | 6 | 2 | 4 | 8 | J Benneteau | 3 | 6 | 3 | ||||||||||||||||||
 J Melzer | 6 | 6 | J Melzer | 6 | 4 | 0r | |||||||||||||||||||||
| WC | M Janvier | 3 | 4 | 8 | J Benneteau | 3 | 5 | ||||||||||||||||||||
| Alt | P Sousa | 6 | 5 | 6 | Alt | P Sousa | 6 | 7 | |||||||||||||||||||
| Q | M Ymer | 1 | 7 | 1 | Alt | P Sousa | 6 | 62 | 77 | ||||||||||||||||||
| WC | A Müller | 64 | 2 | 2 | R Dutra Silva | 3 | 77 | 65 | |||||||||||||||||||
| 2 | R Dutra Silva | 77 | 6 | ||||||||||||||||||||||||
Nicolás Almagro defended his title by defeating Filippo Volandri 6–3, 4–6, 6–4 in the final.
Roger Federer defeated Novak Djokovic in the final, 6–0, 7–6 (9–7), to win the men's singles title at the 2012 Cincinnati Masters. It was his record fifth title at the Cincinnati Masters, and the first occasion that a player won an ATP Masters 1000 event without having serve broken or losing a set. Federer would repeat this accomplishment at the 2015 event. It was Djokovic's fourth runner-up finish at the Cincinnati Masters.
Ernests Gulbis was the defending champion, but lost to Dominic Thiem in the quarterfinals.
Thiem went on to win his first ATP title, defeating Leonardo Mayer in the final, 6–7(8–10), 7–5, 7–6(7–2).
Tomáš Berdych was the defending champion and successfully defended his title, defeating Jack Sock in the final, 7–6(7–1), 6–2.
Viktor Troicki was the defending champion and successfully defended his title, defeating Grigor Dimitrov in the final, 2–6, 6–1, 7–6(9–7).
Dominic Thiem was the defending champion, but lost in the quarterfinals to Sam Querrey.
Mischa Zverev was the defending champion but chose not to defend his title.
Rogério Dutra Silva was the defending champion but lost to Steve Darcis 6–7(2–7), 6–4, 5–7 in the final.
Andy Murray was the two-time defending champion but lost to Jordan Thompson in the first round.
Frances Tiafoe was the defending champion but chose not to defend his title.
Roger Federer defeated Rafael Nadal in the final, 6–4, 6–3 to win his second title in Shanghai. It was his 27th Masters 1000 title.
This was the first edition of the tournament.
Frances Tiafoe was the defending champion but chose not to defend his title.
John Isner was the defending champion and successfully defended his title, defeating Ryan Harrison in a rematch of the 2017 final, 5–7, 6–3, 6–4.
Alexander Zverev was the defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–4.
Frances Tiafoe was the defending champion, but lost in the first round to Dan Evans.
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.
Alexander Zverev defeated Matteo Berrettini in the final, 6–7(8–10), 6–4, 6–3 to win the men's singles tennis title at the 2021 Madrid Open. It was Zverev's fourth Masters 1000 title.
Dan Evans was the defending champion but lost in the quarterfinals to Denis Kudla.
Andrey Rublev was the defending champion, but chose to compete in St. Petersburg instead.