| Singles | |
|---|---|
| 2017 Rakuten Japan Open Tennis Championships | |
| Champion |  David Goffin |
| Runner-up |  Adrian Mannarino |
| Final score | 6–3, 7–5 |
| Draw | 32 (4Q / 3WC) |
| Seeds | 8 |
Nick Kyrgios was the defending champion, but chose to compete in Beijing instead.
David Goffin won the title, defeating Adrian Mannarino in the final, 6–3, 7–5.
Marin Čilić (semifinals)
Dominic Thiem (first round)
Milos Raonic (second round, retired) David Goffin (champion)
Kevin Anderson (second round)
Sam Querrey (first round)
Albert Ramos Viñolas (first round)
Diego Schwartzman (semifinals)| Semifinals | Final | ||||||||||||
| 1 | Marin Čilić | 77 | 4 | 0 | |||||||||
| Adrian Mannarino | 65 | 6 | 6 | ||||||||||
| Adrian Mannarino | 3 | 5 | |||||||||||
| 4 | David Goffin | 6 | 7 | ||||||||||
| 4 | David Goffin | 77 | 78 | ||||||||||
| 8 | Diego Schwartzman | 63 | 66 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Čilić | 6 | 6 | ||||||||||||||||||||||||
| Q |  S Tsitsipas | 3 | 2 | 1 | M Čilić | 6 | 6 | ||||||||||||||||||||
| WC |  Y Uchiyama | 6 | 3 | 6 | WC | Y Uchiyama | 3 | 4 | |||||||||||||||||||
| Q | F Škugor | 3 | 6 | 1 | 1 | M Čilić | 6 | 6 | |||||||||||||||||||
| Q | Y Takahashi | 4 | 6 | 4 | R Harrison | 2 | 0 | ||||||||||||||||||||
| R Harrison | 6 | 4 | 6 | R Harrison | 6 | 1 | 77 | ||||||||||||||||||||
| G Simon | 2 | 66 | 5 | K Anderson | 3 | 6 | 62 | ||||||||||||||||||||
| 5 | K Anderson | 6 | 78 | 1 | M Čilić | 77 | 4 | 0 | |||||||||||||||||||
| 3 | M Raonic | 6 | 6 | A Mannarino | 65 | 6 | 6 | ||||||||||||||||||||
 V Troicki | 3 | 4 | 3 | M Raonic | 0r | ||||||||||||||||||||||
| B Paire | 4 | 0r | Y Sugita | 1 | |||||||||||||||||||||||
| Y Sugita | 6 | 0 | Y Sugita | 2 | 4 | ||||||||||||||||||||||
| WC | G Soeda | 5 | 63 | A Mannarino | 6 | 6 | |||||||||||||||||||||
| A Mannarino | 7 | 77 | A Mannarino | 6 | 6 | ||||||||||||||||||||||
 J Veselý | 6 | 2 | 6 | J Veselý | 3 | 2 | |||||||||||||||||||||
| 7 | A Ramos Viñolas | 2 | 6 | 3 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | S Querrey | 4 | 62 | ||||||||||||||||||||||||
| R Gasquet | 6 | 77 | R Gasquet | 6 | 77 | ||||||||||||||||||||||
| WC | T Daniel | 1 | 3 |  Y-h Lu | 0 | 65 | |||||||||||||||||||||
| Y-h Lu | 6 | 6 | R Gasquet | 5 | 2 | ||||||||||||||||||||||
| I Karlović | 4 | 3 | 4 | D Goffin | 7 | 6 | |||||||||||||||||||||
| Q |  M Ebden | 6 | 6 | Q | M Ebden | 6 | 5 | 61 | |||||||||||||||||||
| F Lopez | 5 | 1 | 4 | D Goffin | 2 | 7 | 77 | ||||||||||||||||||||
| 4 | D Goffin | 7 | 6 | 4 | D Goffin | 77 | 78 | ||||||||||||||||||||
| 8 | D Schwartzman | 6 | 7 | 8 | D Schwartzman | 63 | 66 | ||||||||||||||||||||
| D Young | 2 | 5 | 8 | D Schwartzman | 6 | 6 | |||||||||||||||||||||
| B Tomic | 6 | 3 | 6 | B Tomic | 3 | 1 | |||||||||||||||||||||
 J Sousa | 3 | 6 | 3 | 8 | D Schwartzman | 6 | 7 | ||||||||||||||||||||
| SE |  A Dolgopolov | 6 | 6 | S Johnson | 0 | 5 | |||||||||||||||||||||
 D Medvedev | 1 | 2 | SE | A Dolgopolov | 2 | 4 | |||||||||||||||||||||
| S Johnson | 4 | 77 | 6 | S Johnson | 6 | 6 | |||||||||||||||||||||
| 2 | D Thiem | 6 | 65 | 4 | |||||||||||||||||||||||
Frances Tiafoe (qualifying competition) Vasek Pospisil (qualifying competition) Nicolás Kicker (first round)
Radu Albot (qualifying competition)
Nicolás Jarry (first round) Stefanos Tsitsipas (qualified) Adrián Menéndez-Maceiras (first round)
Yannick Hanfmann (qualifying competition)| First round | Qualifying competition | ||||||||||||
| 1 | Frances Tiafoe | 6 | 6 | ||||||||||
| WC | Kaito Uesugi | 2 | 4 | ||||||||||
| 1 | Frances Tiafoe | 4 | 2 | ||||||||||
| 6 | Stefanos Tsitsipas | 6 | 6 | ||||||||||
| Tatsuma Ito | 6 | 65 | 2 | ||||||||||
| 6 | Stefanos Tsitsipas | 4 | 77 | 6 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 2 | Vasek Pospisil | 77 | 77 | ||||||||||
| WC | Yosuke Watanuki | 65 | 65 | ||||||||||
| 2 | Vasek Pospisil | 61 | 2 | ||||||||||
| Yusuke Takahashi | 77 | 6 | |||||||||||
| Yusuke Takahashi | 6 | 6 | |||||||||||
| 7 | Adrián Menéndez-Maceiras | 1 | 2 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 3 | Nicolás Kicker | 4 | 64 | ||||||||||
| Matthew Ebden | 6 | 77 | |||||||||||
| Matthew Ebden | 6 | 6 | |||||||||||
| 8 | Yannick Hanfmann | 3 | 1 | ||||||||||
| WC | Sho Shimabukuro | 3 | 4 | ||||||||||
| 8 | Yannick Hanfmann | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 4 | Radu Albot | 7 | 64 | 77 | |||||||||
| Reilly Opelka | 5 | 77 | 63 | ||||||||||
| 4 | Radu Albot | 6 | 5 | 3 | |||||||||
| Alt | Franko Škugor | 1 | 7 | 6 | |||||||||
| Alt | Franko Škugor | 6 | 6 | ||||||||||
| 5 | Nicolás Jarry | 4 | 4 | ||||||||||
Roberto Bautista Agut was the defending champion, but lost in the semifinals to David Goffin.
Lucas Pouille was the defending champion, but lost in the second round to Marius Copil.
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.
Richard Gasquet was the defending champion but withdrew before the tournament began.
Jo-Wilfried Tsonga was the defending champion, but withdrew before the tournament began with a left hamstring injury.
Two-time defending champion Rafael Nadal successfully defended his title, defeating Kei Nishikori in the final, 6–3, 6–2, to win the singles title at the 2018 Monte-Carlo Masters. It was his record-extending 11th Monte-Carlo Masters title and his record 31st ATP Masters title. By winning the title, Nadal also retained the ATP no. 1 singles ranking.
Two-time defending champion Rafael Nadal successfully defended his title, defeating Stefanos Tsitsipas in the final, 6–2, 6–1. By winning the title, Nadal retained the ATP no. 1 singles ranking. It was Nadal's record-extending eleventh Barcelona Open title and his 20th ATP 500 title overall, equaling Roger Federer's record. It was Tsitsipas' maiden ATP final.
Rafael Nadal defeated the defending champion Alexander Zverev in the final, 6–1, 1–6, 6–3, to win the men's singles title at the 2018 Italian Open. It was his record-extending eighth Italian Open title and his record-extending 32nd Masters title overall. With the win, Nadal also regained the ATP No. 1 singles ranking.
Alexander Zverev was the defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–4.
David Goffin was the defending champion, but lost in the second round to Andy Murray.
Karen Khachanov was the defending champion, but withdrew before the tournament began.
Dominic Thiem defeated Daniil Medvedev in the final, 6–4, 6–0, to win the singles title at the 2019 Barcelona Open.
João Sousa was the defending champion, but lost in the second round to David Goffin.
Novak Djokovic defeated Stefanos Tsitsipas in the final, 6–3, 6–4, to win the men's singles title at the 2019 Madrid Open. With the win, Djokovic tied Rafael Nadal's record of 33 Masters 1000 singles titles.
Richard Gasquet was the defending champion, but lost to Jordan Thompson in the semifinals.
Alexander Zverev was the two-time defending champion but chose not to defend his title.
Novak Djokovic was the defending champion, but lost to Stefanos Tsitsipas in the quarterfinals.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–2. The victory made Federer the first player in ATP history to win 10 titles on two different surfaces.
Rafael Nadal defeated Stefanos Tsitsipas in the final, 6–4, 6–7(6–8), 7–5 to win the singles title at the 2021 Barcelona Open. Nadal saved a championship point en route to his record-extending twelfth Barcelona Open title.
Benoît Paire was the defending champion from when the event was last held in 2019, but chose to participate in Geneva instead.