| Challenger Sibiu | 10/02 09:15 | 28 | [97] Stefano Travaglia v Sumit Nagal [212] | 6-4,0-6,6-0 | |
| Challenger Sibiu | 10/01 09:20 | 27 | [297] Geoffrey Blancaneaux v Sumit Nagal [212] | 6-7,3-6 | |
| Challenger Sibiu | 09/30 11:30 | 26 | [177] Jiri Lehecka v Sumit Nagal [212] | 5-7,3-6 | |
| Challenger Sibiu | 09/28 07:00 | 25 | [325] Lucas Miedler v Sumit Nagal [212] | 3-6,1-6 | |
| Challenger Bukareszt | 09/20 10:00 | 25 | [185] Sumit Nagal v Lorenzo Giustino [229] | 6-3,5-7,5-7 | |
| Challenger Szczecin | 09/13 11:00 | 25 | [99] Stefano Travaglia v Sumit Nagal [186] | 3-6,6-1,6-4 | |
| Challenger Banja Luka | 09/08 11:20 | 26 | [383] Carlos Gomez-Herrera v Sumit Nagal [164] | 7-5,6-3 | |
| Challenger Banja Luka | 09/07 08:00 | 25 | [376] Nicolas Alvarez v Sumit Nagal [164] | 1-6,2-6 | |
| Challenger 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 Meerbusch | 08/09 11:05 | 25 | [197] Marcelo T B Vera v Sumit Nagal [159] | 7-5,4-6,6-3 | |
| Challenger Liberec | 08/02 15:30 | 25 | [211] Maximilian Marterer v Sumit Nagal [159] | 6-4,6-3 | |
| Olimpiada 2020 - Mężczyźni | 07/26 05:00 | 25 | [160] Sumit Nagal v Daniil Medvedev [2] | 2-6,1-6 | |
| Olimpiada 2020 - Mężczyźni | 07/24 03:20 | 24 | [160] Sumit Nagal v Denis Istomin [197] | 6-4,6-7,6-4 | |
| ATP Hamburg | 07/13 09:00 | 25 | [130] Juan Pablo Varillas v Sumit Nagal [154] | 6-0,6-4 | |
| ATP Hamburg | 07/11 09:00 | 19 | [175] Zhizhen Zhang v Sumit Nagal [150] | 6-4,6-2 | |
| ATP Hamburg | 07/10 10:40 | 14 | Lewie Lane v Sumit Nagal | 3-6,1-6 | |
| Challenger Braunschweig | 07/07 09:30 | 26 | Sumit Nagal v Marvin Moeller | 3-6,6-1,2-6 | |
| Challenger Braunschweig | 07/05 15:50 | 25 | [150] Sumit Nagal v Mohamed Safwat [170] | 6-3,7-6 | |
| Challenger Aix en Provence | 06/15 08:30 | 25 | [252] Tristan Lamasine v Sumit Nagal [144] | 4-6,7-6,6-1 | |
| Challenger Lyon | 06/08 12:05 | 25 | [143] Sumit Nagal v Fernando Verdasco [99] | 7-6,6-7,5-7 | |
| French Open | 05/26 17:15 | 15 | [166] Alejandro Tabilo v Sumit Nagal [143] | 6-3,6-3 | |
| French Open | 05/25 17:30 | 14 | [192] Roberto Marcora v Sumit Nagal [143] | 3-6,3-6 | |
| Challenger Heilbronn | 05/13 10:00 | 27 | [139] Bernabe Zapata Miralles v Sumit Nagal [140] | 6-3,6-1 | |
| Challenger Heilbronn | 05/12 08:30 | 26 | [131] Antoine Hoang v Sumit Nagal [140] | 6-1,1-6,4-6 | |
| Challenger Heilbronn | 05/10 13:20 | 25 | [140] Sumit Nagal v Denis Kudla [118] | 7-5,1-6,6-1 | |
| Challenger Praga | 05/07 13:00 | 27 | [89] Norbert Gombos v Sumit Nagal [140] | 6-4,6-2 | |
| Challenger Praga | 05/06 10:00 | 26 | [213] Sergiy Stakhovsky v Sumit Nagal [140] | 6-4,1-6,4-6 | |
| Challenger Praga | 05/04 10:25 | 25 | [225] Zdenek Kolar v Sumit Nagal [140] | 2-6,4-6 | |
| ATP Monachium | 04/24 12:15 | 14 | [93] Norbert Gombos v Sumit Nagal [135] | 6-4,6-7,6-1 |
Sumit Nagal (ur. 16 sierpnia 1997 w Jhajjar) – indyjski tenisista, zwycięzca juniorskiego Wimbledonu 2015 w grze podwójnej, reprezentant kraju w Pucharze Davisa.