| US Open | 09/01 15:00 | 23 | [124] Sumit Nagal v Bradley Klahn [129] | 6-1,6-3,3-6,6-1 | |
| Challenger de Praga | 08/20 13:50 | 27 | Stan Wawrinka v Sumit Nagal | 2-6,6-0,6-1 | |
| Challenger de Praga | 08/19 11:05 | 26 | Jiri Lehecka v Sumit Nagal | 7-5,6-7,3-6 | |
| Challenger de Praga | 08/17 10:00 | 25 | [167] Jay Clarke v Sumit Nagal [127] | Retired | |
| Copa Davis | 03/07 17:00 | 45 | [37] Marin Cilic v Sumit Nagal [127] | 6-0,6-1 | |
| Challenger de Pau | 02/25 14:50 | 25 | [127] Sumit Nagal v Hugo Grenier [250] | 1-6,6-2,3-6 | |
| Challenger Bengaluru | 02/13 09:30 | 26 | [126] Sumit Nagal v Blaz Rola [149] | 3-6,3-6 | |
| Challenger Bengaluru | 02/11 11:35 | 25 | [126] Sumit Nagal v Malek Jaziri [260] | 6-0,6-4 | |
| ATP Pune | 02/03 12:55 | 25 | [125] Sumit Nagal v Viktor Troicki [191] | 2-6,7-6,1-6 | |
| Open de Australia | 01/16 02:50 | 44 | [172] Mohamed Safwat v Sumit Nagal [130] | 7-6,6-2 | |
| Copa Davis | 11/30 07:10 | 4 | Yousaf Khalil v Sumit Nagal | 1-6,0-6 | |
| Copa Davis | 11/30 07:10 | - | Muhammad Shoaib v Sumit Nagal | Cancelled | |
| Copa Davis | 11/29 09:00 | - | Huzaifa Abdul Rehman v Sumit Nagal | 0-6,2-6 | |
| Challenger de Pune | 11/15 07:30 | 27 | [190] Ramkumar Ramanathan v Sumit Nagal [127] | 6-4,7-6 | |
| Challenger de Pune | 11/14 08:00 | 26 | [323] Ivan Nedelko v Sumit Nagal [127] | Retired | |
| Challenger de Pune | 11/13 09:15 | 25 | Aryan Goveas v Sumit Nagal | 3-6,6-7 | |
| Challenger de Lima | 10/22 20:40 | 25 | [306] Orlando Luz v Sumit Nagal [129] | 6-1,6-4 | |
| Challenger de Santo Domingo | 10/08 17:00 | 25 | [224] Alejandro Tabilo v Sumit Nagal [129] | Retired | |
| Challenger de Campinas | 10/05 16:25 | 28 | [135] Sumit Nagal v Juan Pablo Ficovich [325] | 4-6,1-6 | |
| Challenger de Campinas | 10/04 15:00 | 27 | [262] Francisco Cerundolo v Sumit Nagal [135] | 6-7,5-7 | |
| Challenger de Campinas | 10/03 16:15 | 26 | [327] Orlando Luz v Sumit Nagal [135] | 5-7,3-6 | |
| Challenger de Campinas | 10/02 13:00 | 25 | [363] Gastao Elias v Sumit Nagal [135] | Retired | |
| Challenger Buenos Aires | 09/29 16:00 | 29 | [166] Facundo Bagnis v Sumit Nagal [161] | 4-6,2-6 | |
| Challenger Buenos Aires | 09/28 14:00 | 28 | [108] Thiago Monteiro v Sumit Nagal [161] | 0-6,1-6 | |
| Challenger Buenos Aires | 09/27 17:55 | 27 | [161] Sumit Nagal v Francisco Cerundolo [266] | 6-3,4-6,6-4 | |
| Challenger Buenos Aires | 09/26 15:00 | 26 | [161] Sumit Nagal v Jose Hernandez-Fernandez [265] | 6-3,3-6,6-4 | |
| Challenger Buenos Aires | 09/24 15:30 | 25 | [161] Sumit Nagal v Pedro Sakamoto [366] | 6-7,6-4,6-3 | |
| Challenger de Banja Luka | 09/15 10:00 | 29 | [187] Tallon Griekspoor v Sumit Nagal [174] | 6-2,6-3 | |
| Challenger de Banja Luka | 09/14 09:00 | 28 | [174] Sumit Nagal v Filip Horansky [189] | 7-6,6-2 | |
| Challenger de Banja Luka | 09/13 12:15 | 27 | [174] Sumit Nagal v Federico Coria [155] | 6-2,7-5 |
Sumit Nagal (Jhajjar, 16 de agosto de 1997) es un tenista indio.
Ganó el título junior de dobles masculino de Wimbledon 2015, convirtiéndose así en el sexto jugador indio en ganar un título de Grand Slam junior. Es el segundo tenista individual indio mejor clasificado y, desde 2018, ha sido miembro habitual del equipo nacional de la Copa Davis de su país.
Ha obtenido dos títulos Challenger y 9 de ITF.