| Challenger de Chennai | 02/06 10:55 | 25 | [311] S D Prajwal Dev v Sumit Nagal [121] | 1-6,2-6 | |
| Open de Australia | 01/18 05:35 | 24 | [137] Sumit Nagal v Juncheng Shang [140] | 6-2,3-6,5-7,4-6 | |
| Open de Australia | 01/16 04:00 | 23 | [27] Alexander Bublik v Sumit Nagal [137] | 4-6,2-6,6-7 | |
| Open de Australia | 01/12 04:00 | 19 | [118] Alex Molcan v Sumit Nagal [139] | 4-6,4-6 | |
| Open de Australia | 01/11 04:30 | 15 | [422] Edward Winter v Sumit Nagal [139] | 3-6,2-6 | |
| Open de Australia | 01/10 02:30 | 14 | [238] Geoffrey Blancaneaux v Sumit Nagal [139] | 3-6,5-7 | |
| Challenger de Canberra | 01/02 01:30 | 25 | [157] Andrea Vavassori v Sumit Nagal [138] | 6-7,6-4,7-5 | |
| Challenger de Maspalomas | 11/30 10:00 | 26 | [434] Imanol L Morillo v Sumit Nagal [140] | 3-6,6-4,7-5 | |
| Challenger de Maspalomas | 11/28 10:00 | 25 | [235] Alejandro Moro Canas v Sumit Nagal [140] | 0-6,2-6 | |
| Challenger de Valencia | 11/21 12:00 | 25 | [141] Sumit Nagal v Alejandro Moro Canas [249] | 4-6,3-6 | |
| Challenger de Helsinki | 11/12 11:00 | 29 | [173] Corentin Moutet v Sumit Nagal [169] | 6-3,3-6,6-2 | |
| Challenger de Helsinki | 11/11 14:40 | 28 | [211] Stefano Travaglia v Sumit Nagal [169] | 1-6,4-6 | |
| Challenger de Helsinki | 11/10 15:55 | 27 | [169] Sumit Nagal v Emil Ruusuvuori [69] | Retired | |
| Challenger de Helsinki | 11/08 13:00 | 26 | [154] Jakub Mensik v Sumit Nagal [169] | 5-7,2-6 | |
| Challenger de Helsinki | 11/07 12:35 | 25 | [164] Dennis Novak v Sumit Nagal [169] | 2-6,3-6 | |
| ATP Basilea | 10/21 16:05 | 14 | [160] Sumit Nagal v Dominik Koepfer [78] | 6-3,1-6,6-7 | |
| Challenger de Málaga | 10/10 10:15 | 25 | [157] Sumit Nagal v Ugo Blanchet [324] | Retired | |
| Masters de Shanghái | 10/02 08:55 | 14 | [161] Sumit Nagal v Luke Saville [300] | 3-6,2-6 | |
| Copa Davis | 09/17 09:05 | 4 | Sumit Nagal v Yassine Dlimi | 6-3,6-3 | |
| Copa Davis | 09/16 13:40 | 2 | Sumit Nagal v Adam Moundir | 6-3,6-3 | |
| Challenger de Tulln | 09/10 12:00 | 29 | [189] Sumit Nagal v Vit Kopriva [194] | 2-6,4-6 | |
| Challenger de Tulln | 09/09 12:35 | 28 | [189] Sumit Nagal v Flavio Cobolli [137] | 6-3,6-4 | |
| Challenger de Tulln | 09/08 12:50 | 27 | [88] Albert Ramos-Vinolas v Sumit Nagal [189] | 6-7,3-6 | |
| Challenger de Tulln | 09/07 13:40 | 26 | [189] Sumit Nagal v Vitaliy Sachko [165] | 7-6,3-6,6-3 | |
| Challenger de Tulln | 09/05 11:10 | 25 | [189] Sumit Nagal v Daniel Masur [406] | 6-1,6-2 | |
| Challenger de Como | 09/01 10:20 | 27 | [132] Pedro Martinez v Sumit Nagal [189] | 6-4,6-4 | |
| Challenger de Como | 08/31 10:00 | 26 | [189] Sumit Nagal v Zsombor Piros [112] | 6-3,6-4 | |
| Challenger de Como | 08/29 14:35 | 25 | [189] Sumit Nagal v Riccardo Bonadio [196] | 6-4,0-6,7-6 | |
| US Open | 08/22 15:00 | 14 | [95] Taro Daniel v Sumit Nagal [190] | 6-3,7-5 | |
| Challenger de Meerbusch | 08/10 09:00 | 26 | [183] Sumit Nagal v Benjamin Hassan [253] | 2-6,2-6 |
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.