Nikola Mektić is a Croatian professional tennis player who is a former world No. 1 in doubles.
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.
Mike Bryan and Jack Sock were the defending champions, but Sock could not participate due to injury. Mike Bryan played alongside his brother Bob, but lost in the third round to Nicolas Mahut and Édouard Roger-Vasselin.
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.
Rajeev Ram and Joe Salisbury won the men's doubles tennis title at the 2020 Australian Open, defeating wildcards Max Purcell and Luke Saville in the final, 6–4, 6–2.
Nikola Mektić and Mate Pavić defeated Dan Evans and Neal Skupski in the final, 6–4, 6–4, to win the men's doubles tennis title at the 2021 Miami Open. The second-seeded duo did not drop a set en route to the title and became the first all-Croatian team to win the Miami Open. Pavić also usurped Robert Farah for the ATP No. 1 doubles ranking by winning the title after Farah lost in the second 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.
Nikola Mektić and Mate Pavić defeated Rajeev Ram and Joe Salisbury in the final, 6–4, 7–6(7–4), to win the men's doubles tennis title at the 2021 Italian Open. The second seeds did not drop a set en route to their third ATP Tour Masters 1000 victory together and their sixth title overall of the season. The all-Croatian pair also became the second doubles team to have reached the finals of the first four Masters 1000 tournaments in a season after the Bryan brothers, who last accomplished the feat in 2018. Ram and Salisbury were competing for their first title of the season and their fourth title together.
Nicolas Mahut and Pierre-Hugues Herbert defeated Alexander Bublik and Andrey Golubev in the final, 4–6, 7–6(7–1), 6–4, to win the men's doubles title at the 2021 French Open. It was their second French Open title and fifth major title together. They saved match points in their semifinal match against Juan Sebastián Cabal and Robert Farah. Bublik and Golubev became the first male Kazakhstani players to reach a major final.
Nikola Mektić and Mate Pavić defeated Marcel Granollers and Horacio Zeballos in the final, 6–4, 7–6(7–5), 2–6, 7–5, to win the gentlemen's doubles title at the 2021 Wimbledon Championships. It was their 8th title of the year, with Mektić winning his first major title in doubles and Pavić winning his third, following previous victories at the 2018 Australian Open and 2020 US Open. They also became the first Croatian pair to win the Wimbledon doubles title.
Pablo Carreño Busta and Alex de Minaur were the defending champions, but Carreño Busta chose not to defend his title and de Minaur played alongside Cameron Norrie instead. They lost in the quarterfinals to Marcel Granollers and Horacio Zeballos.
Rajeev Ram and Joe Salisbury defeated defending champion Bruno Soares and his partner, Jamie Murray, in the final, 3–6, 6–2, 6–2, to win the men's doubles tennis title at the 2021 US Open. This was the second major title for Ram and Salisbury as a team after they first won the 2020 Australian Open together. Ram and Salisbury saved four match points in their quarterfinal match against Matthew Ebden and Max Purcell en route to the title.
John Peers and Filip Polášek defeated Aslan Karatsev and Andrey Rublev in the final, 6–3, 7–6(7–5) to win the men's doubles tennis title at the 2021 Indian Wells Masters.
Pierre-Hugues Herbert and Nicolas Mahut defeated Rajeev Ram and Joe Salisbury in the final, 6–4, 7–6(7–0) to win the doubles title at the 2021 ATP Finals.
John Isner and Jack Sock defeated Santiago González and Édouard Roger-Vasselin in the final, 7–6(7–4), 6–3, to win the men's doubles tennis title at the 2022 Indian Wells Masters. The victory earned Isner his second doubles title at Indian Wells, Sock his third, and the pair's second together overall at the tournament.
Hubert Hurkacz and John Isner defeated Wesley Koolhof and Neal Skupski in the final, 7–6(7–5), 6–4 to win the men's doubles title at the 2022 Miami Open. Isner completed the Sunshine Double, having previously won the title at Indian Wells alongside Jack Sock. He became the first player to do so in men's doubles since Pierre-Hugues Herbert and Nicolas Mahut in 2016.
Rajeev Ram and Joe Salisbury defeated Juan Sebastián Cabal and Robert Farah in the final, 6–4, 3–6, [10–7]. Their victory earned them their first ATP Tour Masters 1000 on clay and their second Masters 1000 title overall.
Wesley Koolhof and Neal Skupski defeated Juan Sebastián Cabal and Robert Farah in the final, 6–7(4–7), 6–4, [10–5] to win the men's doubles tennis title at the 2022 Madrid Open. It was their first ATP Masters 1000 title.
Nikola Mektić and Mate Pavić successfully defended their title, defeating 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.
Rajeev Ram 
Joe Salisbury 
Nikola Mektić 
