01/By surface
each with its own count, at equal weight
Hard
0-3
G. leads 3-0 in 3 meetings on hard
Clay
0-1
G. leads 1-0 in 1 meeting on clay
Grass
0-1
G. leads 1-0 in 1 meeting on grass
02/Every meeting
5 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, N. first |
|---|---|---|---|---|---|---|
| Jun 21, 2019 | Queen's Club ChampionshipsATP500 | grass | quarterfinal | Simon G. | 7-6, 5-7, 7-6 | 191 v 38 |
| Feb 14, 2017 | ABN AMRO World Tennis TournamentATP500 | hard | 1st round | Simon G. | 3-6, 6-3, 6-4 | 52 v 24 |
| May 29, 2015 | French OpenGrand Slam, best of 5 | clay | 3rd round | Simon G. | 6-2, 6-7, 6-7, 6-3, 6-1 | 116 v 13 |
| Oct 30, 2013 | BNP Paribas MastersMasters 1000 | hard | 2nd round | Simon G. | 6-4, 6-7, 7-6 | 56 v 17 |
| Sep 21, 2013 | Open de MoselleATP250 | hard | semifinal | Simon G. | 6-3, 7-6 | 79 v 16 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Mahut N. and Simon G. each carry the table against every opponent faced.