Marcelo Melo and Lukasz Kubot take their first ATP Tour doubles title of the season in Acapulco.

Marcelo Melo and Lukasz Kubot win their first ATP Tour doubles title of the season in Acapulco.

Marcelo Melo and Lukasz Kubot advance to the doubles semi-finals in Rio de Janeiro without dropping a set.

Marcelo Melo and Lukasz Kubot level their FedEx ATP Head2Head series against Ivan Dodig and Filip Polasek at 2-2.

The world's eight leading teams pose for the official 2019 Nitto ATP Finals doubles photo.

Marcelo Melo and Lukasz Kubot have won 16 of their past 19 tour-level matches.

Marcelo Melo and Lukasz Kubot are bidding to become the first team to win back-to-back Rolex Shanghai Masters titles.

Marcelo Melo and Lukasz Kubot convert three of six break points to reach the China Open semi-finals on Thursday.

Lukasz Kubot and Marcelo Melo move into the third round of the US Open.

Lukasz Kubot/Marcelo Melo win their first ATP Tour doubles team title of the season on Friday at the Winston-Salem Open

Lukasz Kubot/Marcelo Melo win the Winston-Salem Open doubles title on Friday.

Marcelo Melo & Lukasz Kubot open their 2019 Roland Garros campaign with victory over Roberto Carballes Baena and Jaume Munar

Marcelo Melo and Lukasz Kubot are into their second Monte-Carlo quarter-final as a team.

Lukasz Kubot, foreground, and Marcelo Melo advance on Wednesday at the Miami Open presented by Itau.

Marcelo Melo and Lukasz Kubot celebrate capturing the Rolex Shanghai Masters doubles title on Sunday after victory over Jamie Murray and Bruno Soares.

Marcelo Melo and Lukasz Kubot beat Oliver Marach and Mate Pavic in straight sets at the Rolex Shanghai Masters on Saturday.

Lukasz Kubot and Marcelo Melo celebrate reaching the Shanghai semi-finals on Friday.

Marcelo Melo and Lukasz Kubot defeat Oliver Marach and Mate Pavic in straight sets at the China Open on Sunday.

Second seeds Lukas Kubot and Marcelo Melo save three match points on Thursday against Rohan Bopanna and Edouard Roger-Vasselin in Beijing.

Lukasz Kubot and Marcelo Melo will look to finish the 2018 season at the Nitto ATP Finals in London for the second consecutive year.

Lukasz Kubot (front) and Marcelo Melo see off Roland-Garros champions Pierre-Hugues Herbert and Nicolas Mahut to reach the US Open quarter-finals.

Lukasz Kubot and Marcelo Melo break three times to defeat Raven Klaasen and Michael Venus in Cincinnati on Thursday.

Lukasz Kubot and Marcelo Melo defeat home favourites Alexander Zverev and Mischa Zverev in straight sets to win their second Gerry Weber Open title on Sunday.

Top seeds Lukasz Kubot, front, and Marcelo Melo advanced to the second round at Roland Garros by defeating Marton Fucsovics and Marco Cecchinato in straight sets on Wednesday.

Marcelo Melo, left, and Lukasz Kubot participate in a Carnival parade ahead of the Rio Open.