| Challenger - Orlando | 11/17 18:35 | 25 | [437] Nick Chappell v Ramkumar Ramanathan [186] | 6-3,6-4 | |
| Challenger - Cary | 11/11 16:00 | 25 | [185] Ramkumar Ramanathan v Teymuraz Gabashvili [276] | 6-3,4-6,1-6 | |
| Challenger - Eckental | 11/08 10:00 | 29 | [206] Ramkumar Ramanathan v Sebastian Korda [136] | 4-6,4-6 | |
| Challenger - Eckental | 11/07 10:00 | 28 | Marvin Moeller v Ramkumar Ramanathan | 6-4,1-6,1-6 | |
| Challenger - Eckental | 11/06 10:00 | 27 | [120] Evgeny Donskoy v Ramkumar Ramanathan [206] | 2-6,1-6 | |
| Challenger - Eckental | 11/04 09:35 | 26 | [206] Ramkumar Ramanathan v Hiroki Moriya [246] | 7-6,6-4 | |
| Challenger - Eckental | 11/02 12:10 | 25 | [205] Ramkumar Ramanathan v Duje Ajdukovic [388] | 6-4,6-2 | |
| Challenger - Marbella | 10/27 11:35 | 25 | [155] Carlos Taberner v Ramkumar Ramanathan [207] | 3-6,7-5,7-6 | |
| Challenger Ismaning | 10/21 14:35 | 26 | [174] Botic Van De Zandschulp v Ramkumar Ramanathan [207] | 6-2,6-2 | |
| Challenger Ismaning | 10/19 15:10 | 25 | [207] Ramkumar Ramanathan v Quentin Halys [209] | 7-6,6-3 | |
| Challenger - Alicante | 10/13 09:45 | 25 | [207] Ramkumar Ramanathan v Carlos Alcaraz [158] | 6-7,6-7 | |
| Challenger - Barcelona | 10/06 09:45 | 25 | [163] Kimmer Coppejans v Ramkumar Ramanathan [199] | 6-2,7-5 | |
| Challenger - Biella | 09/29 08:00 | 25 | [199] Ramkumar Ramanathan v Christopher O'Connell [112] | 4-6,2-6 | |
| French Open | 09/21 15:05 | 14 | [268] Tristan Lamasine v Ramkumar Ramanathan [197] | 7-5,6-2 | |
| Challenger - Nur-Sultan | 03/11 06:40 | 25 | [400] Jesper De Jong v Ramkumar Ramanathan [185] | 6-2,6-2 | |
| Davis Cup | 03/07 18:15 | 45 | Borna Gojo v Ramkumar Ramanathan | Cancelled | |
| Davis Cup | 03/06 16:25 | 45 | [37] Marin Cilic v Ramkumar Ramanathan [182] | 7-6,7-6 | |
| Challenger - Columbus | 02/26 16:25 | 25 | [208] Zhe Li v Ramkumar Ramanathan [180] | 7-6,7-6 | |
| Challenger - Morelos | 02/19 21:30 | 25 | [297] Guilherme Clezar v Ramkumar Ramanathan [179] | 7-6,4-6,6-4 | |
| Challenger - Bengaluru | 02/13 07:55 | 26 | [180] Ramkumar Ramanathan v Ilya Ivashka [148] | 6-7,1-6 | |
| Challenger - Bengaluru | 02/12 09:35 | 25 | Ramkumar Ramanathan v Abhinav Sanjeev Shanmugam | 6-1,6-3 | |
| ATP - Pune | 02/03 15:25 | 25 | [98] Salvatore Caruso v Ramkumar Ramanathan [182] | 3-6,6-4,7-5 | |
| Challenger - Bangkok 2 | 01/24 05:20 | 27 | [161] Robin Haase v Ramkumar Ramanathan [185] | 7-6,6-2 | |
| Challenger - Bangkok 2 | 01/23 08:25 | 26 | [185] Ramkumar Ramanathan v Go Soeda [111] | 7-5,7-5 | |
| Challenger - Bangkok 2 | 01/21 06:15 | 25 | [185] Ramkumar Ramanathan v JC Aragone [262] | Retired | |
| Australian Open | 01/14 05:35 | 44 | [118] Federico Coria v Ramkumar Ramanathan [185] | 4-6,6-4,6-1 | |
| Challenger - Canberra | 01/06 04:15 | 24 | [121] Emil Ruusuvuori v Ramkumar Ramanathan [183] | 3-6,6-2,6-3 | |
| Australian Open - WC | 12/05 03:15 | 26 | [175] Ramkumar Ramanathan v Ze Zhang [359] | 3-6,0-6 | |
| Davis Cup | 11/30 08:40 | - | Huzaifa Abdul Rehman v Ramkumar Ramanathan | Cancelled | |
| Davis Cup | 11/29 07:45 | - | Muhammad Shoaib v Ramkumar Ramanathan | 0-6,0-6 |
Wikipedia - Ramkumar Ramanathan
Ramkunar Ramanathan (Chennai, 8 november 2001) is een tennisser uit India. Hij won nog geen ATP-toernooien maar stond eenmaal in een ATP-finale in het enkelspel. Hij heeft twee titels in het dubbelspel gewonnen.