| Singles | |
|---|---|
| 2015 Open BNP Paribas Banque de Bretagne | |
| Champion |  Benoît Paire |
| Runner-up | Grégoire Barrère |
| Final score | 6–4, 3–6, 6–4 |
Pierre-Hugues Herbert was the defending champion, but did not participate.
Benoît Paire won the title, defeating Grégoire Barrère in the final, 6–4, 3–6, 6–4.
Farrukh Dustov (semifinals) Kenny de Schepper (second round)
Andreas Beck (second round) Benoît Paire (champion)
Illya Marchenko (quarterfinals)
Jürgen Zopp (first round)
Matteo Viola (first round)| Semifinals | Final | ||||||||||||
| 1 | Farrukh Dustov | 4 | 2 | ||||||||||
| 4 | Benoît Paire | 6 | 6 | ||||||||||
| 4 | Benoît Paire | 6 | 3 | 6 | |||||||||
| WC | Grégoire Barrère | 4 | 6 | 4 | |||||||||
| David Guez | 3 | 6 | 1 | ||||||||||
| WC | Grégoire Barrère | 6 | 1 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | F Dustov | 6 | 4 | 6 | |||||||||||||||||||||||
 A Šetkić | 4 | 6 | 2 | 1 | F Dustov | 6 | 6 | ||||||||||||||||||||
| WC | M Vaïsse | 77 | 6 | WC | M Vaïsse | 4 | 4 | ||||||||||||||||||||
| LL |  A Artuñedo Martínavarro | 64 | 4 | 1 | F Dustov | 6 | 6 | ||||||||||||||||||||
| Q | Teri Groll | 6 | 4 | 2 | WC | M Teixeira | 4 | 4 | |||||||||||||||||||
| A Arnaboldi | 1 | 6 | 6 | A Arnaboldi | 2 | 2 | |||||||||||||||||||||
| WC | M Teixeira | 6 | 6 | WC | M Teixeira | 6 | 6 | ||||||||||||||||||||
| 8 | M Viola | 2 | 4 | 1 | F Dustov | 4 | 2 | ||||||||||||||||||||
| 4 | B Paire | 6 | 6 | 4 | B Paire | 6 | 6 | ||||||||||||||||||||
 M Fischer | 2 | 3 | 4 | B Paire | 6 | 3 | |||||||||||||||||||||
| R Marcora | 65 | 6 | 6 | R Marcora | 2 | 2r | |||||||||||||||||||||
| Q | C Hemery | 77 | 4 | 4 | 4 | B Paire | 77 | 6 | |||||||||||||||||||
| E Couacaud | 2 | 4 |  M Authom | 65 | 2 | ||||||||||||||||||||||
| Q | D Brands | 6 | 6 | Q | D Brands | 65 | 4 | ||||||||||||||||||||
| M Authom | 77 | 6 | M Authom | 77 | 6 | ||||||||||||||||||||||
| 6 | J Zopp | 65 | 3 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | I Marchenko | 6 | 6 | ||||||||||||||||||||||||
 T Daniel | 3 | 3 | 5 | I Marchenko | 3 | 6 | 6 | ||||||||||||||||||||
| L Lokoli | 1 | 2 | LL | S Boltz | 6 | 4 | 0 | ||||||||||||||||||||
| LL | Sébastien Boltz | 6 | 6 | 5 | I Marchenko | 77 | 65 | 2 | |||||||||||||||||||
| A Michon | 3 | 5 | D Guez | 64 | 77 | 6 | |||||||||||||||||||||
| D Guez | 6 | 7 | D Guez | 6 | 65 | 6 | |||||||||||||||||||||
| P Torebko | 3 | 3 | 3 | A Beck | 3 | 77 | 2 | ||||||||||||||||||||
| 3 | A Beck | 6 | 6 | D Guez | 3 | 6 | 1 | ||||||||||||||||||||
| LL | Elie Rousset | 3 | 3 | WC | G Barrère | 6 | 1 | 6 | |||||||||||||||||||
| SE |  A Kapaś | 6 | 6 | SE | A Kapaś | 6 | 64 | 4 | |||||||||||||||||||
| Q | E Corrie | 6 | 4 | Q | E Corrie | 4 | 77 | 6 | |||||||||||||||||||
| V Millot | 4 | 1r | Q | E Corrie | 2 | 3 | |||||||||||||||||||||
 A Karatsev | 3 | 3 | WC | G Barrère | 6 | 6 | |||||||||||||||||||||
| WC | G Barrère | 6 | 6 | WC | G Barrère | 7 | 6 | ||||||||||||||||||||
 J Kovalík | 2 | 7 | 62 | 2/WC | K de Schepper | 5 | 2 | ||||||||||||||||||||
| 2/WC | K de Schepper | 6 | 5 | 77 | |||||||||||||||||||||||
Conor Niland is the defending champion.
Benoît Paire won the title after defeating Grega Žemlja 6–7(6–8), 6–4, 6–4 in the final.
In the singles event of the 2012 Heineken Open men's tennis tournament, David Ferrer was the defending champion and confirmed his title beating unseeded player Olivier Rochus in the final, 6–3, 6–4, for his 3rd win in Auckland.
Tomáš Berdych was the defending champion but withdrew because of a wrist injury.
Richard Gasquet won the title, defeating Benoît Paire in an all-French final, 6–2, 6–3.
Tomáš Berdych was the defending champion, but chose not to compete.
Grigor Dimitrov won the title, defeating David Ferrer in the final, 2–6, 6–3, 6–4.
Roger Federer defeated David Ferrer in the final, 6–3, 1–6, 6–2, to win the men's singles title at the 2014 Cincinnati Masters. It was his sixth title at the event.
Kenny de Schepper was the defending champion, but lost in the quarterfinals.
The previous year's runner-up Norbert Gombos won the title, defeating Benoît Paire in the final, 6–1, 7–6(7–4).
Novak Djokovic defeated Tomáš Berdych in the final, 7–5, 4–6, 6–3, to win the singles title at the 2015 Monte-Carlo Masters. It was his second Monte-Carlo Masters title, and he became the first man to win the first three ATP Tour Masters 1000 titles of the season.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Andreas Seppi in the final, 7–6(7–1), 6–4.
Kei Nishikori was the defending champion, but lost to Benoît Paire in the semifinals.
Pablo Cuevas was the defending champion and successfully defended his title, defeating Pablo Carreño Busta in the final, 7–6(7–4), 6–3.
Dominic Thiem was the defending champion and successfully defended his title, defeating Alexander Zverev in the final, 6–4, 3–6, 6–0.
Benoît Paire was the defending champion, but chose to compete in Hamburg instead.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Lucas Pouille was the defending champion, but lost in the second round to Marius Copil.
Novak Djokovic defeated Borna Ćorić in the final, 6–3, 6–4 to win the singles title at the 2018 Shanghai Masters. It was his record fourth Shanghai Masters title, and 32nd Masters 1000 title overall.
Defending champion Rafael Nadal successfully defended his title, defeating Novak Djokovic in the final 6–0, 4–6, 6–1, to win the men's singles title at the 2019 Italian Open. It was his record-extending ninth Italian Open title and a record 34th ATP Masters 1000 title.
Daniil Medvedev was the defending champion, but chose not to participate this year.
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.
Benoît Paire was the defending champion from when the event was last held in 2019, but chose to participate in Geneva instead.
Raven Klaasen and Michael Venus were the reigning champions from when the tournament was last held in 2019, but both players chose to participate with different partners.