| Men's doubles | |
|---|---|
| 2018 ASB Classic | |
| Champions |  Oliver Marach  Mate Pavić |
| Runners-up |  Max Mirnyi Philipp Oswald |
| Score | 6–4, 5–7, [10–7] |
| Draw | 16 |
| Seeds | 4 |
Marcin Matkowski and Aisam-ul-Haq Qureshi were the defending champions, but lost in the quarterfinals to Raven Klaasen and Michael Venus.
Oliver Marach and Mate Pavić won the title, defeating Max Mirnyi and Philipp Oswald in the final, 6–4, 5–7, [10–7].
Oliver Marach / Mate Pavić (champions)
Raven Klaasen / 
Michael Venus (semifinals)
Santiago González / 
Julio Peralta (semifinals)
Pablo Cuevas / 
Horacio Zeballos (quarterfinals, withdrew)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | O Marach M Pavić | 6 | 66 | [10] | |||||||||||||||||||||||
| G Durán A Molteni | 4 | 78 | [6] | 1 | O Marach M Pavić | 77 | 6 | ||||||||||||||||||||
 D Nestor  D Young | 6 | 3 | [10] | D Nestor D Young | 63 | 3 | |||||||||||||||||||||
 R Haase M Middelkoop | 3 | 6 | [5] | 1 | O Marach M Pavić | 6 | 4 | [10] | |||||||||||||||||||
| 3 | S González J Peralta | 6 | 6 | 3 | S González J Peralta | 4 | 6 | [6] | |||||||||||||||||||
 M Demoliner  T Huey | 3 | 4 | 3 | S González J Peralta | 6 | 77 | |||||||||||||||||||||
 R Lindstedt F Škugor | 6 | 6 | R Lindstedt F Škugor | 1 | 64 | ||||||||||||||||||||||
| Alt |  R Albot T Sandgren | 4 | 1 | 1 | O Marach M Pavić | 6 | 5 | [10] | |||||||||||||||||||
| M Mirnyi P Oswald | 6 | 3 | [10] | M Mirnyi P Oswald | 4 | 7 | [7] | ||||||||||||||||||||
M Daniell  D Inglot | 3 | 6 | [8] | M Mirnyi P Oswald | w/o | ||||||||||||||||||||||
| WC | J Sock J Withrow | 78 | 64 | [8] | 4 | P Cuevas H Zeballos | |||||||||||||||||||||
| 4 | P Cuevas H Zeballos | 66 | 77 | [10] | M Mirnyi P Oswald | 79 | 78 | ||||||||||||||||||||
 M Matkowski  A-u-H Qureshi | 64 | 710 | [10] | 2 | R Klaasen M Venus | 67 | 66 | ||||||||||||||||||||
| WC |  L Paes P Raja | 77 | 68 | [7] | M Matkowski A-u-H Qureshi | 6 | 4 | [4] | |||||||||||||||||||
| W Koolhof A Sitak | 1 | 77 | [7] | 2 | R Klaasen M Venus | 4 | 6 | [10] | |||||||||||||||||||
| 2 | R Klaasen M Venus | 6 | 62 | [10] | |||||||||||||||||||||||
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but lost in the second round to Jay Clarke and Marcus Willis.
Raven Klaasen and Rajeev Ram were the defending champions, but Klaasen chose not to participate this year and Ram chose to compete in Shenzhen instead.
John Isner and Jack Sock were the defending champions but withdrew from their first round match.
Łukasz Kubot and Marcelo Melo were the defending champions, but they were defeated in the second round by Jonathan Erlich and Marcin Matkowski.
Henri Kontinen and John Peers were the defending champions, but lost in the second round to Radu Albot and Chung Hyeon.
Mike Bryan and Jack Sock won their second consecutive Grand Slam as a pair, defeating Łukasz Kubot and Marcelo Melo in the final, 6–3, 6–1. Mike Bryan won an all-time record 18th grand slam men's doubles title, and with a 6th US Open men's doubles title, he equals Richard Sears and Holcombe Ward.
Raven Klaasen and Rajeev Ram were the defending champions, but chose not to participate together. Klaasen played alongside Michael Venus, but lost in the second round to Ivan Dodig and Ram. Dodig and Ram lost in the quarterfinals to John Isner and Jack Sock.
Pierre-Hugues Herbert and Nicolas Mahut won the men's doubles tennis title at the 2018 French Open, defeating Oliver Marach and Mate Pavić in the final, 6–2, 7–6(7–4). Herbert and Mahut were the third all-French team to reach the French Open men's doubles final in six years.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but lost in the second round to Kevin Anderson and Novak Djokovic.
Henri Kontinen and John Peers were the defending champions, but lost in the second round to Robert Lindstedt and Dominic Thiem.
Łukasz Kubot and Marcelo Melo were the defending champions, but lost in the quarterfinals to Marcel Granollers and Rajeev Ram.
Pierre-Hugues Herbert and Nicolas Mahut won the men's doubles tennis title at the 2019 Australian Open, defeating Henri Kontinen and John Peers in the final, 6–4, 7–6(7–1). They are the first French players to achieve the Career Grand Slam as well as only the 8th Men's Doubles pair to achieve this feat.
Oliver Marach and Mate Pavić were the defending champions, but lost to Ben McLachlan and Jan-Lennard Struff in the semifinals.
Raven Klaasen and Michael Venus were the defending champions, but lost in the first round to Jonathan Eysseric and Gilles Simon.
Jean-Julien Rojer and Horia Tecău were the defending champions, but lost in the semifinals to Rajeev Ram and Joe Salisbury.
John Isner and Jack Sock were the defending champions, but Sock could not participate due to injury. Isner played alongside Sam Querrey, but lost in the first round to Pierre-Hugues Herbert and Nicolas Mahut.
Bob and Mike Bryan were the defending champions, and successfully defended the title, defeating Wesley Koolhof and Stefanos Tsitsipas in the final, 7–5, 7–6(10–8). This was their last Masters title.
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 were the defending champions and successfully defended their title, defeating Mate Pavić and Bruno Soares in the final, 6–3, 7–5.
Oliver Marach and Mate Pavić were the two-time defending champions from when the event was last held in 2019 but lost in the first round to Tomislav Brkić and Nikola Ćaćić.