| Challenger de Szczecin | 09/13 11:00 | 25 | [99] Stefano Travaglia v Sumit Nagal [186] | 3-6,6-1,6-4 | |
| Challenger de Banja Luka | 09/08 11:20 | 26 | [383] Carlos Gomez-Herrera v Sumit Nagal [164] | 7-5,6-3 | |
| Challenger de Banja Luka | 09/07 08:00 | 25 | [376] Nicolas Alvarez v Sumit Nagal [164] | 1-6,2-6 | |
| Challenger de Como | 08/31 13:00 | 25 | [164] Sumit Nagal v Andrey Kuznetsov [280] | 4-6,6-7 | |
| US Open | 08/24 16:30 | 14 | [165] Sumit Nagal v Juan Pablo Ficovich [246] | 5-7,6-4,3-6 | |
| Challenger de Meerbusch | 08/09 11:05 | 25 | [197] Marcelo T B Vera v Sumit Nagal [159] | 7-5,4-6,6-3 | |
| Challenger de Liberec | 08/02 15:30 | 25 | [211] Maximilian Marterer v Sumit Nagal [159] | 6-4,6-3 | |
| JJ. OO. 2020 - Masculino | 07/26 05:00 | 25 | [160] Sumit Nagal v Daniil Medvedev [2] | 2-6,1-6 | |
| JJ. OO. 2020 - Masculino | 07/24 03:20 | 24 | [160] Sumit Nagal v Denis Istomin [197] | 6-4,6-7,6-4 | |
| ATP Hamburgo | 07/13 09:00 | 25 | [130] Juan Pablo Varillas v Sumit Nagal [154] | 6-0,6-4 | |
| ATP Hamburgo | 07/11 09:00 | 19 | [175] Zhizhen Zhang v Sumit Nagal [150] | 6-4,6-2 | |
| ATP Hamburgo | 07/10 10:40 | 14 | Lewie Lane v Sumit Nagal | 3-6,1-6 | |
| Challenger de Braunschweig | 07/07 09:30 | 26 | Sumit Nagal v Marvin Moeller | 3-6,6-1,2-6 | |
| Challenger de Braunschweig | 07/05 15:50 | 25 | [150] Sumit Nagal v Mohamed Safwat [170] | 6-3,7-6 | |
| Challenger de Aix-en-Provence | 06/15 08:30 | 25 | [252] Tristan Lamasine v Sumit Nagal [144] | 4-6,7-6,6-1 | |
| Challenger de Lyon | 06/08 12:05 | 25 | [143] Sumit Nagal v Fernando Verdasco [99] | 7-6,6-7,5-7 | |
| Open de Francia | 05/26 17:15 | 15 | [166] Alejandro Tabilo v Sumit Nagal [143] | 6-3,6-3 | |
| Open de Francia | 05/25 17:30 | 14 | [192] Roberto Marcora v Sumit Nagal [143] | 3-6,3-6 | |
| Challenger de Heilbronn | 05/13 10:00 | 27 | [139] Bernabe Zapata Miralles v Sumit Nagal [140] | 6-3,6-1 | |
| Challenger de Heilbronn | 05/12 08:30 | 26 | [131] Antoine Hoang v Sumit Nagal [140] | 6-1,1-6,4-6 | |
| Challenger de Heilbronn | 05/10 13:20 | 25 | [140] Sumit Nagal v Denis Kudla [118] | 7-5,1-6,6-1 | |
| Challenger de Praga | 05/07 13:00 | 27 | [89] Norbert Gombos v Sumit Nagal [140] | 6-4,6-2 | |
| Challenger de Praga | 05/06 10:00 | 26 | [213] Sergiy Stakhovsky v Sumit Nagal [140] | 6-4,1-6,4-6 | |
| Challenger de Praga | 05/04 10:25 | 25 | [225] Zdenek Kolar v Sumit Nagal [140] | 2-6,4-6 | |
| ATP Múnich | 04/24 12:15 | 14 | [93] Norbert Gombos v Sumit Nagal [135] | 6-4,6-7,6-1 | |
| ATP Barcelona | 04/19 11:25 | 24 | [135] Sumit Nagal v Pierre-Hugues Herbert [78] | 5-7,0-6 | |
| ATP Barcelona | 04/18 10:25 | 19 | [171] Thomas Fabbiano v Sumit Nagal [135] | 6-7,3-6 | |
| ATP Barcelona | 04/17 13:25 | 14 | [164] Illya Marchenko v Sumit Nagal [135] | 6-3,2-6,5-7 | |
| ATP Monte-Carlo | 04/10 11:00 | 14 | [69] Stefano Travaglia v Sumit Nagal [136] | 6-3,6-0 | |
| ATP Cagliari | 04/06 12:55 | 25 | [136] Sumit Nagal v Jozef Kovalik [128] | 6-3,1-6,3-6 |
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.