| Doubles | |
|---|---|
| 2019 Monte-Carlo Masters | |
| Champions |  Nikola Mektić Franko Škugor |
| Runners-up |  Robin Haase Wesley Koolhof |
| Score | 6–7(3–7), 7–6(7–3), [11–9] |
Bob and Mike Bryan were the defending champions, [1] but chose not to participate this year.
Nikola Mektić and Franko Škugor won the title, defeating Robin Haase and Wesley Koolhof in the final, 6–7(3–7), 7–6(7–3), [11–9].
Pierre-Hugues Herbert / Nicolas Mahut (first round)
Łukasz Kubot / 
Marcelo Melo (quarterfinals)
Jamie Murray / Bruno Soares (semifinals)
Juan Sebastián Cabal / Robert Farah (second round)
Oliver Marach / Mate Pavić (second round)
Henri Kontinen / 
John Peers (second round) Nikola Mektić / Franko Škugor (champions)
Raven Klaasen / Joe Salisbury (first round)| Semifinals | Final | ||||||||||||
| Robin Haase Wesley Koolhof | 77 | 6 | |||||||||||
| 3 | Jamie Murray Bruno Soares | 64 | 4 | ||||||||||
| Robin Haase Wesley Koolhof | 77 | 63 | [9] | ||||||||||
| 7 | Nikola Mektić Franko Škugor | 63 | 77 | [11] | |||||||||
 Máximo González Horacio Zeballos | 4 | 3 | |||||||||||
| 7 | Nikola Mektić Franko Škugor | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | P-H Herbert N Mahut | 64 | 62 | ||||||||||||||||||||||||
| R Haase W Koolhof | 77 | 77 | R Haase W Koolhof | 68 | 6 | [10] | |||||||||||||||||||||
 A Zverev M Zverev | 4 | 6 | [10] | A Zverev M Zverev | 710 | 4 | [8] | ||||||||||||||||||||
| WC |  R Arneodo H Nys | 6 | 4 | [7] | R Haase W Koolhof | 6 | 7 | ||||||||||||||||||||
 M Fucsovics G Pella | 6 | 6 |  R Albot  N Basilashvili | 1 | 5 | ||||||||||||||||||||||
 M Berrettini F Fognini | 4 | 3 | M Fucsovics G Pella | 1 | 79 | [6] | |||||||||||||||||||||
| R Albot N Basilashvili | 6 | 65 | [10] | R Albot N Basilashvili | 6 | 67 | [10] | ||||||||||||||||||||
| 8 | R Klaasen J Salisbury | 3 | 77 | [7] | R Haase W Koolhof | 77 | 6 | ||||||||||||||||||||
| 3 | J Murray B Soares | 4 | 6 | [13] | 3 | J Murray B Soares | 64 | 4 | |||||||||||||||||||
 R Bopanna D Inglot | 6 | 3 | [11] | 3 | J Murray B Soares | 77 | 64 | [10] | |||||||||||||||||||
| I Dodig É Roger-Vasselin | 6 | 6 | I Dodig É Roger-Vasselin | 65 | 77 | [8] | |||||||||||||||||||||
 L Đere D Sharan | 2 | 1 | 3 | J Murray B Soares | 7 | 6 | |||||||||||||||||||||
| K Edmund N Skupski | 7 | 4 | [5] | D Schwartzman  J Sousa | 5 | 2 | |||||||||||||||||||||
| D Schwartzman J Sousa | 5 | 6 | [10] | D Schwartzman J Sousa | 6 | 6 | |||||||||||||||||||||
 G Dimitrov  S Wawrinka | 66 | 3 | 6 | H Kontinen J Peers | 4 | 3 | |||||||||||||||||||||
| 6 | H Kontinen J Peers | 78 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | O Marach M Pavić | 5 | 77 | [11] | |||||||||||||||||||||||
 B McLachlan J-L Struff | 7 | 64 | [9] | 5 | O Marach M Pavić | 3 | 6 | [6] | |||||||||||||||||||
| M Cecchinato A Seppi | 3 | 4 | M González H Zeballos | 6 | 3 | [10] | |||||||||||||||||||||
| M González H Zeballos | 6 | 6 | M González H Zeballos | w/o | |||||||||||||||||||||||
 D Goffin L Pouille | 5 | 3 | M Demoliner  D Medvedev | ||||||||||||||||||||||||
| M Demoliner D Medvedev | 7 | 6 | M Demoliner D Medvedev | 6 | 6 | ||||||||||||||||||||||
| WC | M Djokovic N Djokovic | 1 | 3 | 4 | JS Cabal R Farah | 2 | 4 | ||||||||||||||||||||
| 4 | JS Cabal R Farah | 6 | 6 | M González H Zeballos | 4 | 3 | |||||||||||||||||||||
| 7 | N Mektić F Škugor | 6 | 7 | 7 | N Mektić F Škugor | 6 | 6 | ||||||||||||||||||||
M Middelkoop  S Tsitsipas | 3 | 5 | 7 | N Mektić F Škugor | 3 | 6 | [10] | ||||||||||||||||||||
K Khachanov  F López | 6 | 6 | K Khachanov F López | 6 | 3 | [4] | |||||||||||||||||||||
J-J Rojer  H Tecău | 4 | 3 | 7 | N Mektić F Škugor | 6 | 7 | |||||||||||||||||||||
| WC | J Melzer D Thiem | 6 | 7 | 2 | Ł Kubot M Melo | 3 | 5 | ||||||||||||||||||||
| Alt | P Kohlschreiber F Verdasco | 4 | 5 | WC | J Melzer D Thiem | 3 | 4 | ||||||||||||||||||||
| M Granollers M López | 68 | 4 | 2 | Ł Kubot M Melo | 6 | 6 | |||||||||||||||||||||
| 2 | Ł Kubot M Melo | 710 | 6 | ||||||||||||||||||||||||
Nikola Mektić and Antonio Veić were the defending champions but Mektić chose to not compete
Veić chose to compete with Franko Škugor and won the title, defeating Facundo Bagnis and Julio César Campozano 7–6(7–5), 4–6, [11–9] in the final.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Marcelo Arévalo and Sergio Galdós were the defending champions but chose to defend their title with different partners. Arévalo partnered Miguel Ángel Reyes-Varela and successfully defended his title. Galdós partnered Roberto Maytín but lost in the first round to Arévalo and Reyes-Varela.
Łukasz Kubot and Marcelo Melo were the defending champions, but they were defeated in the second round by Jonathan Erlich and Marcin Matkowski.
Brian Baker and Nikola Mektić were the defending champions, but Baker chose not to participate this year. Mektić played alongside Alexander Peya, but lost in the first round to Wesley Koolhof and Artem Sitak.
Jürgen Melzer and Franko Škugor defeated Matwé Middelkoop and Frederik Nielsen in the final, 6–4, 7–6(8–6), to win the doubles tennis title at the 2019 Grand Prix Hassan II. They won their first title as a team, having never played together in a prior tournament. It marked Melzer's 15th individual doubles title and Škugor's fourth.
Nikola Mektić and Alexander Peya were the defending champions, but Peya could not participate due to injury. Mektić played alongside Franko Škugor but lost in the second round to Wesley Koolhof and Stefanos Tsitsipas.
Juan Sebastián Cabal and Robert Farah were the defending champions and successfully defended their title, defeating Raven Klaasen and Michael Venus in the final, 6–1, 6–3.
Kevin Krawietz and Andreas Mies defeated Jérémy Chardy and Fabrice Martin in the final, 6–2, 7–6(7–3) to win the men's doubles tennis title at the 2019 French Open. None of the four finalists had previously contested a major men's doubles final, and neither team was seeded for the tournament.
Philipp Petzschner and Tim Pütz were the defending champions, but Petzschner chose not to participate this year. Pütz played alongside Jan-Lennard Struff, but lost in the first round to John Peers and Bruno Soares.
Juan Sebastián Cabal and Robert Farah defeated Nicolas Mahut and Édouard Roger-Vasselin in the final, 6–7(5–7), 7–6(7–5), 7–6(8–6), 6–7(5–7), 6–3 to win the men's doubles tennis title at the 2019 Wimbledon Championships. Cabal and Farah saved five match points en route to the title, against Jean-Julien Rojer and Horia Tecău in the quarterfinals. With the win, they jointly attained the ATP number one doubles ranking; Mike Bryan, Łukasz Kubot and Bruno Soares were also in contention for the top ranking.
Henri Kontinen and John Peers were the defending champions, but lost in the second round to Marcel Granollers and Horacio Zeballos.
Jean-Julien Rojer and Horia Tecău were the two-time defending champions, and chose not to participate this year.
Juan Sebastián Cabal and Robert Farah won their second consecutive Grand Slam men's doubles title, defeating Marcel Granollers and Horacio Zeballos in the final, 6–4, 7–5 to win the men's doubles tennis title at the 2019 US Open. Cabal and Farah retained the ATP no. 1 doubles ranking. Mike Bryan, Łukasz Kubot and Nicolas Mahut were also in contention for the top ranking at the start of the tournament.
Matteo Berrettini and Fabio Fognini were the defending champions, but Fognini chose not to participate this year. Berrettini played alongside Simone Bolelli, but lost in the final to Divij Sharan and Igor Zelenay, 3–6, 6–3, [8–10].
Ben McLachlan and Jan-Lennard Struff were the defending champions, but chose not to participate together. McLachlan teamed up with Luke Bambridge, but lost in the first round to Divij Sharan and Artem Sitak. Struff played alongside Lucas Pouille, but lost in the semifinals to Nikola Mektić and Franko Škugor.
Dominic Inglot and Franko Škugor were the defending champions, but Inglot decided to compete in Vienna instead. Škugor played alongside Nikola Mektić, but they lost to Jean-Julien Rojer and Horia Tecău in the first round.
Defending champion Nikola Mektić and his partner, Mate Pavić, defeated Dan Evans and Neal Skupski in the final, 6–3, 4–6, [10–7], to win the doubles tennis title at the 2021 Monte-Carlo Masters. It was the all-Croatian duo's second consecutive ATP Tour Masters 1000 title together and their fifth title overall of the year. The win also earned Mektić his first successful career title defense. The match was the second successive encounter between both teams in consecutive Masters 1000 finals.
Marcel Granollers and Horacio Zeballos defeated Nikola Mektić and Mate Pavić in the final, 1–6, 6–3, [10–8], to win the men's doubles tennis title at the 2021 Madrid Open. It was the third-seeded duo's third ATP Tour Masters 1000 doubles title together. Mektić and Pavić were contending to be the first doubles team in five years to win a season's first three Masters 1000 events.
Defending champions Nikola Mektić and Mate Pavić defeated John Isner and Diego Schwartzman in the final, 6–2, 6–7(6–8), [12–10] to win the men's doubles tennis title at the 2022 Italian Open. The pair saved a championship point en route to their tenth career title as a team.