Pierre-Hugues Herbert and Nicolas Mahut defeat Ivan Dodig and Mate Pavic in four sets in the Davis Cup final on Saturday.

Pierre-Hugues Herbert watches on as Nicolas Mahut strikes a volley on Sunday in the doubles final at the Nitto ATP Finals.

Nicolas Mahut and Edouard Roger-Vasselin capture their sixth title as a team, triumphing at the European Open in Antwerp.

Nicolas Mahut and Edouard Roger-Vasselin triumph together at the Moselle Open for the second time by defeating Ken Skupski and Neal Skupski.

Frenchmen Julien Benneteau and Nicolas Mahut defeat Spain's Marcel Granollers and Feliciano Lopez to reach the 2018 Davis Cup final.

Nicolas Mahut and Pierre-Hugues Herbert, the 2015-16 champions, fall to Lleyton Hewitt and Nick Kyrgios on Wednesday at The Queen's Club.

Six-year-old Natanel Mahut ran onto Court Philippe-Chatrier to celebrate his father Nicolas Mahut's (right) first Roland Garros title.

Nicolas Mahut and Pierre-Hugues Herbert become the third all-French team in the Open Era to win the Roland Garros title.

Pierre-Hugues Herbert and Nicolas Mahut broke Oliver Marach and Mate Pavic (pictured) to lift their first Roland Garros title.

Pierre-Hugues Herbert and Nicolas Mahut defeat Oliver Marach (pictured) and Mate Pavic to claim their third Grand Slam trophy.

Nicolas Mahut and Pierre-Hugues Herbert clinch their first Roland Garros title, defeating Oliver Marach and Mate Pavic in straight sets.

Nicolas Mahut and Pierre-Hugues Herbert are bidding to win their first Roland Garros title on Saturday.

Frenchmen Nicolas Mahut and Pierre-Hugues Herbert defeat Nikola Mektic and Alexander Peya to secure their spot in the Roland Garros final.

Pierre-Hugues Herbert and Nicolas Mahut are bidding to become the third all-French team in the Open Era to win Roland-Garros.

Pierre-Hugues Herbert and Nicolas Mahut defeat Maximo Gonzalez and Nicolas Jarry to reach the semi-finals at Roland Garros on Wednesday.

Pierre-Hugues Herbert and Nicolas Mahut defeat Simone Bolelli and Fabio Fognini to earn France a 2-1 lead over Italy in the Davis Cup World Group quarter-finals on Saturday.

Nicolas Mahut and Pierre-Hugues Herbert close in on a routine victory over Damir Dzumhur and Filip Krajinovic on Sunday at the BNP Paribas Open.

Nicolas Mahut examines a water bottle as he prepares for a match at the Open 13 Provence in Marseille.

Nicolas Mahut drops just three points behind his first serve to reach the Open 13 Provence second round on Wednesday.

Nicolas Mahut rips through a backhand during a straight sets win over Stefanos Tsitsipas at the Open 13 Provence on Wednesday.

Pierre-Hugues Herbert and Nicolas Mahut win their first title of the season at the ABN AMRO World Tennis Tournament on Sunday.

Nicolas Mahut and Pierre-Hugues Herbert end Oliver Marach and Mate Pavic's unbeaten start to 2018 to win the ABN AMRO World Tennis Tournament on Sunday.

Pierre-Hugues Herbert serves to opponents Jean-Julien Rojer and Horia Tecau during their first round match at the Nitto ATP Finals.

Nicolas Mahut and Pierre-Hugues Herbert celebrate an opening victory at the Nitto ATP Finals.

Pierre-Hugues Herbert and Nicolas Mahut look to finish the season well in London.