| ATP Montpellier | 02/08 12:00 | 26 | Damir Dzumhur v Ruben Bemelmans | 7-5,6-4 | |
| ATP Montpellier | 02/07 13:25 | 25 | Calvin Hemery v Ruben Bemelmans | 1-6,2-6 | |
| Coppa Davis | 02/04 15:20 | 26 | Ruben Bemelmans v Attila Balazs | Cancelled | |
| Coppa Davis | 02/02 12:30 | 26 | Ruben Bemelmans v Marton Fucsovics | 6-4,4-6,7-6,6-3 | |
| Australian Open | 01/17 00:00 | 24 | Nikoloz Basilashvili v Ruben Bemelmans | 7-5,6-1,6-3 | |
| Australian Open | 01/15 07:40 | 23 | Ruben Bemelmans v Lucas Pouille | 6-4,6-4,6-7,7-6 | |
| Australian Open - Qual. | 01/14 00:45 | 46 | Ruben Bemelmans v Duckhee Lee | 6-4,6-4 | |
| Australian Open - Qual. | 01/12 00:30 | 45 | Ruben Bemelmans v Viktor Galovic | 5-7,6-3,7-5 | |
| Australian Open - Qual. | 01/10 07:20 | 44 | Ruben Bemelmans v Kamil Majchrzak | 7-5,5-7,7-5 | |
| ATP Pune | 01/02 13:55 | 25 | Thiago Monteiro v Ruben Bemelmans | 6-7,6-3,7-6 | |
| Challenger Mouilleron le Captif | 11/07 10:00 | 25 | [101] Ruben Bemelmans v Viktor Galovic [224] | 3-6,6-7 | |
| Challenger Eckental | 11/03 11:00 | 27 | [86] Ruben Bemelmans v Jerzy Janowicz [136] | 4-6,4-6 | |
| Challenger Eckental | 11/01 11:50 | 26 | [86] Ruben Bemelmans v Luca Vanni [152] | 6-3,6-7,6-1 | |
| Challenger Eckental | 10/31 13:05 | 25 | [86] Ruben Bemelmans v Lloyd Harris [232] | 6-3,6-2 | |
| ATP Basilea | 10/25 13:00 | 25 | Ruben Bemelmans v Adrian Mannarino | 6-7,6-4,1-6 | |
| ATP Anversa | 10/21 12:00 | 28 | [98] Ruben Bemelmans v Jo-Wilfried Tsonga [17] | 3-6,3-6 | |
| ATP Anversa | 10/20 12:00 | 27 | [61] Joao Sousa v Ruben Bemelmans [98] | 6-4,6-7,4-6 | |
| ATP Anversa | 10/18 19:15 | 26 | [98] Ruben Bemelmans v Nick Kyrgios [20] | 6-7,6-3,6-3 | |
| ATP Anversa | 10/16 15:25 | 25 | [98] Ruben Bemelmans v Peter Gojowczyk [68] | 4-6,7-6,7-6 | |
| Challenger Stockton | 10/03 17:00 | 25 | [101] Ruben Bemelmans v Elias Ymer [208] | 5-7,3-6 | |
| Challenger Tiburon | 09/26 18:50 | 25 | Ruben Bemelmans v Tom Fawcett | 6-3,3-6,3-6 | |
| US Open | 08/28 21:00 | 23 | [20] Lucas Pouille v Ruben Bemelmans [96] | 6-3,6-4,6-4 | |
| ATP Winston-Salem - Qual. | 08/19 17:55 | 26 | Ruben Bemelmans v Borna Gojo | 6-7,6-3,6-7 | |
| Challenger Vancouver | 08/17 00:55 | 26 | [100] Ruben Bemelmans v Stefano Napolitano [203] | 5-7,6-3,4-6 | |
| Challenger Vancouver | 08/16 01:30 | 25 | [100] Ruben Bemelmans v Philip Bester [280] | 7-6,6-4 | |
| Challenger Aptos | 08/07 19:40 | 25 | [97] Ruben Bemelmans v Liam Broady [336] | 6-3,4-6,2-6 | |
| ATP Washington | 08/01 20:20 | 24 | [75] Jordan Thompson v Ruben Bemelmans [98] | 6-3,6-2 | |
| Challenger Scheveningen | 07/23 13:00 | 29 | [163] Guillermo Garcia-Lopez v Ruben Bemelmans [96] | 6-1,6-7,6-2 | |
| Challenger Scheveningen | 07/22 11:00 | 28 | [96] Ruben Bemelmans v Marko Tepavac [410] | 6-2,6-1 | |
| Challenger Scheveningen | 07/21 12:35 | 27 | [96] Ruben Bemelmans v Simone Bolelli [230] | 6-2,6-4 |