Stadium: Court 12 Round: 23 Ground: Hardcourt outdoor
| Challenger - Prague | 2020/08/20 13:50 | Stan Wawrinka v Sumit Nagal | 2-6,6-0,6-1 |
| Challenger - Prague | 2020/08/19 11:05 | Jiri Lehecka v Sumit Nagal | 7-5,6-7,3-6 |
| Coupe Davis | 2020/03/07 17:00 | Marin Cilic v Sumit Nagal | 6-0,6-1 |
| Challenger - Pau | 2020/02/25 14:50 | Sumit Nagal v Hugo Grenier | 1-6,6-2,3-6 |
| Challenger - Bengaluru | 2020/02/13 09:30 | Sumit Nagal v Blaz Rola | 3-6,3-6 |
| Challenger - Bengaluru | 2020/02/11 11:35 | Sumit Nagal v Jaziri, Malek | 6-0,6-4 |
| ATP Pune | 2020/02/03 12:55 | Sumit Nagal v Troicki, Viktor | 2-6,7-6,1-6 |
| Open d'Australie | 2020/01/16 02:50 | Mohamed Safwat v Sumit Nagal | 7-6,6-2 |
| Matchplay 120 | 2020/07/02 22:00 | Marcos Giron v Klahn, Bradley | 6-7,7-6,3-6 |
| Challenger - Indian Wells | 2020/03/02 18:00 | Maxime Janvier v Klahn, Bradley | 6-4,6-4 |
| New York, USA | 2020/02/10 18:35 | Klahn, Bradley v Petrovic, Danilo | 3-6,2-6 |
| New York, USA | 2020/02/09 22:55 | Klahn, Bradley v Arevalo-Gonzalez, Marcelo | 4-6,6-3,7-6 |
| Challenger Dallas | 2020/02/06 18:00 | Joao Menezes v Klahn, Bradley | 3-6,7-6,7-6 |
| Challenger Dallas | 2020/02/05 20:40 | Quiroz, Roberto v Klahn, Bradley | 6-7,4-6 |
| Newport Beach, USA | 2020/01/31 21:10 | Klahn, Bradley v Steve Johnson | 4-6,2-6 |
| Newport Beach, USA | 2020/01/30 19:30 | Sebastian Korda v Klahn, Bradley | 7-5,3-6,4-6 |