Nicolas Mahut and Pierre-Hugues Herbert celebrate capturing the title at the Nitto ATP Finals.

Pierre-Hugues Herbert and Nicolas Mahut share a moment with Michael Venus and Raven Klaasen following the Nitto ATP Finals doubles trophy ceremony.

Nicolas Mahut and Pierre-Hugues Herbert are the first team to win the Nitto ATP Finals title without dropping a set since 2015.

Nicolas Mahut and Pierre-Hugues Herbert extend their winning streak to nine matches after winning the Nitto ATP Finals championship match on Sunday.

Pierre-Hugues Herbert and Nicolas Mahut are the first French team to lift the Nitto ATP Finals trophy since 2005.

Pierre-Hugues Herbert and Nicolas Mahut are competing at the Nitto ATP Finals for the fifth straight year.

Nicolas Mahut and Pierre-Hugues Herbert own a 2-0 team record in finals this year.

Nicolas Mahut and Pierre-Hugues Herbert are aiming to become the first French team since 2005 to lift the Nitto ATP Finals trophy.

Pierre-Hugues Herbert and Nicolas Mahut have not dropped a set since arriving at the Rolex Paris Masters last month.

Nicolas Mahut and Pierre-Hugues Herbert go unbeaten in round-robin play at the Nitto ATP Finals.

Nicolas Mahut and Pierre-Hugues Herbert finish Group Max Mirnyi with a 3-0 record.

Nicolas Mahut and Pierre-Hugues Herbert own a 16-5 record as a team this year.

Pierre-Hugues Herbert and Nicolas Mahut reach the last four at the Nitto ATP Finals for the second straight year.

Pierre-Hugues Herbert and Nicolas Mahut win their first match in Group Max Mirnyi at the Nitto ATP Finals.

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

Nicolas Mahut/Pierre-Hugues Herbert win their home ATP Masters 1000 title on Sunday in Paris.

Nicolas Mahut and Pierre-Hugues Herbert are aiming to lift their first Rolex Paris Masters title this week.

Nicolas Mahut and Pierre-Hugues Herbert have won six ATP Masters 1000 crowns as a team.

Edouard Roger-Vasselin and Nicolas Mahut win a quarter-final thriller at the Rolex Shanghai Masters.

Nicolas Mahut and Edouard Roger-Vasselin win their first ATP Tour title as a team this year in Tokyo.

Nicolas Mahut and Edouard Roger-Vasselin take the title in Tokyo without dropping a set.

Edouard Roger-Vasselin and Nicolas Mahut are yet to drop a set at the Rakuten Japan Open Tennis Championships this week.

Edouard Roger-Vasselin and Nicolas Mahut seek their first ATP Tour doubles title as a team this year in Metz.

Edouard Roger-Vasselin and Nicolas Mahut own six tour-level trophies as a team.

French qualifier Nicolas Mahut celebrates recovering from 3-5 down in the third set to beat Stan Wawrinka on Thursday at The Queen's Club.