- 3.2.1 Tournament Win
- 3.2.2 finals
Mahut is a good serve- and-volley players and doubles expert. In 1999, he won the Orange Bowl, the unofficial World Junior Championships, in 2000, he turned professional. With his doubles partner Julien Benneteau, he won the Junior Doubles at the 1999 U.S. Open and so far two ATP tournaments. He also starred with Michaël Llodra in the doubles final of the French Open in 2013, which was, however, lost to the Bryan twins with 4:6, 6:4, 6:74.
2007 came Mahut after beating Ivan Ljubičić and Rafael Nadal the final of the Queen 's Club Championships, which he lost to Andy Roddick in three sets 6:4, 6:77, 6:72. A month later he was also in the final in Newport. In the 2013 season he won in 's- Hertogenbosch at the age of 31 years, his first title on the ATP World Tour when he defeated Stanislas Wawrinka 6-3, 6-4. His total fourth finals on grass Nicolas Mahut played in July 2013 in Newport. He defeated Lleyton Hewitt with 5:7, 7:5 and 6:3 and won so within one month of his second career title.
On 24 June 2010 a Mahut and American John Isner in the first round at Wimbledon on a historical record. After eleven hours and five minutes Mahut lost the match against Isner 4:6, 6:4, 7:6, 6:7, 68:70. It is worth noting was the decisive fifth set, the decision did not come until after 138 games in favor of the US- American. The match began on 22 June 2010 and was adjourned in the evening after the 4th set. Since it came on the next Matchday again to reach a decision, the match was finally interrupted again at the registry of 59:59 due to poor lighting conditions. But the decisive last set lasted eight hours and eleven minutes. Presented not only in terms of its length, but also the number of aces the game new records: Isner reach 112, Mahut 103 aces. Never before has a player had reached a three-digit number of aces in a match. Due to the long duration match many more records were set.
2011, the two met each other again in the first round at Wimbledon. This time Isner decided the match in just three sets 7:64, 6:2 and 7:66 for themselves.