Oliver Marach and Mate Pavic receive the ATP World Tour No. 1 Doubles Team trophy during the 2018 Nitto ATP Finals.

Oliver Marach and Mate Pavic defeat Neal Skupski and John Isner in a Match Tie-break to reach the Paris semi-finals.

Mate Pavic and Oliver Marach defeat Ivan Dodig and Nikola Mektic in straight sets at the China Open on Saturday.

Oliver Marach smashes as Mate Pavic watches on in their Beijing quarter-final on Friday.

Ivan Dodig (right) reacts quickest for a volley in partnership with Mate Pavic during the Chengdu Open final on Sunday.

Mate Pavic and Ivan Dodig celebrate capturing their second team title on Sunday at the Chengdu Open.

Oliver Marach and Mate Pavic beat Jean-Julien Rojer and Horia Tecau to reach the Rogers Cup semi-finals on Friday.

Kevin Anderson stops by to greet tennis and hockey pros ahead of the Sportsnet Ball Hockey Challenge presented by Knapper at the Rogers Cup.

Oliver Marach and Mate Pavic reach the Hamburg doubles final on Friday to become the first team to qualify for the Nitto ATP Finals in November.

Mate Pavic and Oliver Marach earn their 37th team win of the season on Monday, defeating Feliciano Lopez and Marc Lopez.

In a repeat of the 2018 Australian Open final, Oliver Marach and Mate Pavic defeat Juan Sebastian Cabal and Rober Farah at Roland Garros on Tuesday.

Mate Pavic and Oliver Marach defeat Juan Sebastian Cabal and Robert Farah in three sets to reach the semi-finals at Roland Garros on Tuesday.

Mate Pavic and Oliver Marach lift their fifth team title on Saturday at the Banque Eric Sturdza Geneva Open.

Oliver Marach and Mate Pavic fall in the Rome quarter-finals, but Pavic will rise to No. 1 in the ATP Doubles Rankings on Monday.

Oliver Marach and Mate Pavic save three match point against Steve Johnson and Dominic Thiem on Thursday in a 16-14 Match tie-break victory in Rome.

Steve Johnson, partnering Dominic Thiem, serves during their Rome second-round match against second seeds Oliver Marach and Mate Pavic on Thursday.

Third seeds Mate Pavic and Oliver Marach move within a victory of their fourth tour-level title of the season.

Oliver Marach and Mate Pavic look to claim their first ATP World Tour Masters 1000 title as a team this week at the Miami Open presented by Itau.

Mate Pavic and Oliver Marach reach their fourth final of 2018 at the ABN AMRO World Tennis Tournament on Saturday.

Oliver Marach (at the net) and Mate Pavic keep their eyes on the ball on Friday en route to the Rotterdam semi-finals.

Gabriela Dabrowski and Mate Pavic celebrate capturing the Australian Open mixed doubles title on Sunday.

Oliver Marach and Mate Pavic claim their first Grand Slam title in their second major final with a victory on Rod Laver Arena on Saturday.

Mate Pavic (left) and Oliver Marach celebrate reaching their second Grand Slam championship final (also 2017 Wimbledon) on Thursday in Melbourne.

Mate Pavic and Oliver Marach celebrate reaching the Australian Open doubles semi-finals on Wednesday to extend their unbeaten run to 12 matches in 2018.

Mate Pavic and Oliver Marach start the 2018 season 8-0.