| Challenger - Zadar | 03/24 09:00 | 26 | Frane Nincevic v Sumit Nagal | 0-6,1-6 | |
| Challenger - Zadar | 03/23 11:30 | 25 | [305] Nino Serdarusic v Sumit Nagal [139] | 6-7,4-6 | |
| ATP - Buenos Aires | 03/05 16:00 | 27 | [46] Albert Ramos-Vinolas v Sumit Nagal [150] | 4-6,6-2,7-5 | |
| ATP - Buenos Aires | 03/03 23:20 | 26 | [150] Sumit Nagal v Cristian Garin [22] | 6-4,6-3 | |
| ATP - Buenos Aires | 03/02 16:10 | 25 | [100] Joao Sousa v Sumit Nagal [150] | 2-6,0-6 | |
| ATP - Buenos Aires | 03/01 16:00 | 19 | Sumit Nagal v Nicolas Kicker | 2-6,6-2,6-3 | |
| ATP - Buenos Aires | 02/28 21:00 | 15 | [148] Sumit Nagal v Mario Vilella Martinez [193] | 6-4,6-2 | |
| ATP - Buenos Aires | 02/27 13:00 | 14 | [359] Carlos Gomez-Herrera v Sumit Nagal [148] | 6-7,6-2,6-7 | |
| ATP - Buenos Aires | 02/27 13:00 | 14 | [116] Daniel Elahi Galan v Sumit Nagal [148] | Cancelled | |
| ATP - Cordoba | 02/20 13:00 | 14 | [144] Sumit Nagal v Facundo D Acosta [400] | 4-6,6-2,3-6 | |
| Australian Open | 02/09 03:30 | 23 | [73] Ricardas Berankis v Sumit Nagal [144] | 6-2,7-5,6-3 | |
| ATP - Murray River Open | 02/01 07:20 | 24 | [139] Sumit Nagal v Ricardas Berankis [72] | 2-6,2-6 | |
| Challenger - Hamburg | 10/26 16:00 | 25 | [162] Hugo Gaston v Sumit Nagal [131] | Retired | |
| ATP - Köln 2 | 10/19 14:00 | 25 | [129] Sumit Nagal v Miomir Kecmanovic [41] | 6-4,6-7,1-6 | |
| ATP - Köln 2 | 10/18 09:00 | 164 | [81] Pierre-Hugues Herbert v Sumit Nagal [129] | 6-2,6-2 | |
| ATP - Köln 2 | 10/17 12:00 | 64 | [129] Sumit Nagal v Norbert Gombos [104] | 7-5,6-4 | |
| ATP - Sardinien | 10/13 12:40 | 25 | [74] Laslo Djere v Sumit Nagal [129] | 6-3,6-1 | |
| ATP - Sardinien | 10/11 10:00 | 164 | [102] Andrej Martin v Sumit Nagal [127] | 4-6,2-6 | |
| ATP - Sardinien | 10/10 13:45 | 64 | [273] Geoffrey Blancaneaux v Sumit Nagal [127] | 3-6,3-6 | |
| Challenger - Parma | 10/07 08:00 | 26 | [127] Sumit Nagal v Laslo Djere [73] | 5-7,6-4,4-6 | |
| Challenger - Parma | 10/05 09:00 | 25 | [316] Giulio Zeppieri v Sumit Nagal [127] | 4-6,4-6 | |
| Challenger - Biella | 09/28 10:00 | 25 | [127] Sumit Nagal v Blaz Kavcic [298] | 6-7,4-6 | |
| French Open | 09/21 09:40 | 14 | [127] Sumit Nagal v Dustin Brown [244] | 6-7,5-7 | |
| US Open | 09/03 17:40 | 24 | [124] Sumit Nagal v Dominic Thiem [3] | 3-6,3-6,2-6 | |
| US Open | 09/01 15:00 | 23 | [124] Sumit Nagal v Bradley Klahn [129] | 6-1,6-3,3-6,6-1 | |
| Challenger - Prag | 08/20 13:50 | 27 | Stan Wawrinka v Sumit Nagal | 2-6,6-0,6-1 | |
| Challenger - Prag | 08/19 11:05 | 26 | Jiri Lehecka v Sumit Nagal | 7-5,6-7,3-6 | |
| Challenger - Prag | 08/17 10:00 | 25 | [167] Jay Clarke v Sumit Nagal [127] | Retired | |
| Davis Cup | 03/07 17:00 | 45 | [37] Marin Cilic v Sumit Nagal [127] | 6-0,6-1 | |
| Challenger - Pau | 02/25 14:50 | 25 | [127] Sumit Nagal v Hugo Grenier [250] | 1-6,6-2,3-6 |
Sumit Nagal (* 16. August 1997 in Jhajjar) ist ein indischer Tennisspieler.