| Challenger Rzym | 05/07 11:00 | 24 | [290] Ulises Blanch v Sumit Nagal [303] | 6-2,7-5 | |
| Challenger - Savannah | 05/04 19:55 | 28 | [332] Sumit Nagal v Paolo Lorenzi [108] | 4-6,6-4,2-6 | |
| Challenger - Savannah | 05/03 17:50 | 27 | [332] Sumit Nagal v Corentin Moutet [126] | 6-4,7-5 | |
| Challenger - Savannah | 05/02 21:30 | 26 | [332] Sumit Nagal v Sebastian Korda [408] | 6-3,7-6 | |
| Challenger - Savannah | 05/01 14:00 | 25 | [222] Mats Moraing v Sumit Nagal [332] | Retired | |
| Challenger - Savannah | 04/29 18:35 | 24 | [332] Sumit Nagal v Juan P Varillas [347] | 6-7,6-2,7-5 | |
| Challenger Tallahassee | 04/26 16:00 | 27 | [133] Corentin Moutet v Sumit Nagal [344] | 6-2,1-6,7-5 | |
| Challenger Tallahassee | 04/25 14:00 | 26 | Sumit Nagal v Jordi Arconada | 7-6,6-1 | |
| Challenger Tallahassee | 04/23 18:10 | 25 | [202] Santiago Giraldo v Sumit Nagal [344] | Retired | |
| Challenger Tallahassee | 04/22 19:40 | 24 | [312] Denis Yevseyev v Sumit Nagal [344] | 0-6,6-7 | |
| Challenger Sarasota | 04/16 15:40 | 25 | [346] Sumit Nagal v Bjorn Fratangelo [132] | 3-6,6-3,6-7 | |
| Challenger Sarasota | 04/15 15:50 | 24 | [305] Jelle Sels v Sumit Nagal [346] | 7-6,2-6,3-6 | |
| Challenger Barletta | 04/10 11:45 | 25 | [350] Sumit Nagal v Filippo Baldi [151] | 3-6,4-6 | |
| Challenger Barletta | 04/09 11:30 | 24 | Sumit Nagal v Peter Heller | 1-6,6-1,6-0 | |
| Challenger Barletta | 04/08 08:00 | 166 | Sumit Nagal v Matteo Arnaldi | 6-3,7-5 | |
| Challenger Drummondville | 03/12 18:10 | 25 | [286] Tristan Lamasine v Sumit Nagal [351] | 6-2,6-3 | |
| Challenger Drummondville | 03/11 20:10 | 24 | [332] Kevin King v Sumit Nagal [351] | 3-6,3-6 | |
| Challenger Santiago | 03/04 15:30 | 24 | [382] Johannes Haerteis v Sumit Nagal [351] | 6-4,0-6,6-3 | |
| Challenger Chennai | 02/05 05:50 | 25 | [243] Duckhee Lee v Sumit Nagal [351] | 6-3,6-4 | |
| Challenger Chennai | 02/04 09:15 | 24 | [231] David Perez Sanz v Sumit Nagal [351] | 3-6,2-6 | |
| Challenger Koblenz | 01/14 14:20 | 24 | [335] Roman Safiullin v Sumit Nagal [347] | 6-2,6-1 | |
| Challenger Da Nang | 01/09 05:00 | 26 | [294] Tsung-Hua Yang v Sumit Nagal [361] | 2-6,6-1,6-0 | |
| Challenger Da Nang | 01/08 05:00 | 25 | [400] N.Sriram Balaji v Sumit Nagal [361] | 6-7,6-7 | |
| Challenger Pune | 11/20 05:30 | 25 | [102] Radu Albot v Sumit Nagal [291] | 7-5,6-2 | |
| Challenger Bangalore | 11/15 09:30 | 27 | [312] Saketh Myneni v Sumit Nagal [309] | 6-4,6-4 | |
| Challenger Bangalore | 11/14 08:50 | 26 | [199] James Ward v Sumit Nagal [309] | 3-6,6-7 | |
| Challenger Bangalore | 11/12 09:40 | 25 | [309] Sumit Nagal v Jay Clarke [174] | 6-4,7-5 | |
| Challenger Shenzhen 2 | 10/30 03:30 | 25 | [121] Ramkumar Ramanathan v Sumit Nagal [311] | 3-6,6-4,7-6 | |
| Challenger Shenzhen 2 | 10/29 02:30 | 54 | [312] Sumit Nagal v Arjun Kadhe [356] | 6-4,7-6 | |
| Challenger Shenzhen 2 | 10/28 04:05 | 46 | [312] Sumit Nagal v Xin Gao [278] | 6-4,6-2 |
Sumit Nagal (ur. 16 sierpnia 1997 w Jhajjar) – indyjski tenisista, zwycięzca juniorskiego Wimbledonu 2015 w grze podwójnej, reprezentant kraju w Pucharze Davisa.