| ATP Halle Qual | 06/16 11:35 | 64 | [103] Bemelmans, Ruben v Youzhny, Mikhail [93] | 6-7,2-6 | |
| ATP Stuttgart Qual | 06/09 11:35 | 64 | [110] Bemelmans, Ruben v Harrison, Christian [207] | 5-7,6-7 | |
| French Open, Paris, France | 05/31 09:00 | 24 | [110] Bemelmans, Ruben v Zopp, Jurgen [136] | 6-4,6-4,3-6,4-6,4-6 | |
| French Open, Paris, France | 05/29 12:45 | 23 | [93] Bhambri, Yuki v Bemelmans, Ruben [110] | 4-6,4-6,1-6 | |
| French Open Qual | 05/25 08:00 | 46 | [111] Bemelmans, Ruben v Bellucci, Thomaz [269] | 2-6,6-2,5-7 | |
| French Open Qual | 05/23 14:00 | 45 | [111] Bemelmans, Ruben v Nino Serdarusic [201] | 6-2,6-3 | |
| French Open Qual | 05/21 09:35 | 44 | [111] Bemelmans, Ruben v Ugo Humbert [293] | 6-4,6-7,6-3 | |
| ATP Rome Qual | 05/12 11:25 | 45 | Bemelmans, Ruben v Garcia-Lopez, Guillermo | 3-6,1-6 | |
| Challenger - Rome | 05/09 10:25 | 26 | [107] Bemelmans, Ruben v Quinzi, Gianluigi [259] | 6-4,1-6,2-6 | |
| Challenger - Rome | 05/07 13:50 | 25 | [107] Bemelmans, Ruben v Arnaboldi, Andrea [257] | 6-4,6-2 | |
| Challenger - Ostrava | 05/01 09:00 | 25 | [106] Bemelmans, Ruben v Millot, Vincent [252] | 1-6,1-6 | |
| Challenger - Francavilla | 04/24 11:35 | 25 | [107] Bemelmans, Ruben v Kimmer Coppejans [338] | 4-6,4-6 | |
| Coupe Davis | 04/08 19:00 | 27 | [54] Harrison, Ryan v Bemelmans, Ruben [110] | 6-3,6-4 | |
| Coupe Davis | 04/08 19:00 | 27 | Isner, John v Bemelmans, Ruben | Cancelled | |
| Coupe Davis | 04/07 00:30 | 27 | [14] Querrey, Sam v Bemelmans, Ruben [110] | 6-1,7-6,7-5 | |
| Challenger Le Gosier | 03/31 19:25 | 28 | [116] Bemelmans, Ruben v Denis Kudla [144] | 2-6,6-7 | |
| Challenger Le Gosier | 03/30 23:00 | 27 | [150] Calvin Hemery v Bemelmans, Ruben [116] | 2-6,4-6 | |
| Challenger Le Gosier | 03/29 18:00 | 26 | [498] Song, Evan v Bemelmans, Ruben [116] | 4-6,4-6 | |
| Challenger Le Gosier | 03/27 20:55 | 25 | [326] Mertens, Yannick v Bemelmans, Ruben [116] | 5-7,1-6 | |
| Miami, USA, Qualifying | 03/20 14:00 | 45 | [116] Bemelmans, Ruben v Alex De Minaur [130] | 4-6,3-6 | |
| Miami, USA, Qualifying | 03/19 15:35 | 44 | [116] Bemelmans, Ruben v Souza, Joao Olavo [291] | 7-5,6-3 | |
| ATP - Indian Wells | 03/11 21:20 | 24 | Bemelmans, Ruben v Mayer, Leonardo | 4-6,1-6 | |
| Indian Wells, USA, Qualifying | 03/07 19:00 | 45 | Bemelmans, Ruben v Smyczek, Tim | 3-6,6-7 | |
| Indian Wells, USA, Qualifying | 03/06 20:35 | 44 | Bemelmans, Ruben v Tristan Boyer | 6-1,7-6 | |
| ATP - Marseille | 02/20 13:20 | 25 | Bemelmans, Ruben v Karen Khachanov | 3-6,6-7 | |
| ATP Marseille Qual | 02/19 11:00 | - | Bemelmans, Ruben v Calvin Hemery | 6-4,6-4 | |
| ATP Marseille Qual | 02/18 09:00 | 26 | Bemelmans, Ruben v Marti, Javier | 6-1,6-1 | |
| ATP - Rotterdam | 02/14 18:30 | 25 | Federer, Roger v Bemelmans, Ruben | 6-1,6-2 | |
| Rotterdam, Netherlands, Qualifying | 02/11 10:00 | - | Bemelmans, Ruben v van Rijthoven, Tim | 6-4,6-3 | |
| Rotterdam, Netherlands, Qualifying | 02/10 10:00 | - | Istomin, Denis v Bemelmans, Ruben | 4-6,4-6 |