| Challenger Prostejov | 06/03 12:20 | 25 | [181] Arthur De Greef v Johannes Haerteis [364] | 4-6,4-6 | |
| French Open | 05/22 15:20 | 45 | [230] Enzo Couacaud v Arthur De Greef [185] | 6-0,6-3 | |
| French Open | 05/21 09:40 | 44 | [185] Arthur De Greef v Illya Marchenko [380] | 5-7,6-3,6-2 | |
| Challenger Heilbronn | 05/19 13:00 | 29 | [69] Filip Krajinovic v Arthur De Greef [225] | 6-3,6-1 | |
| Challenger Heilbronn | 05/18 15:25 | 28 | [225] Arthur De Greef v Dennis Novak [121] | 6-3,7-5 | |
| Challenger Heilbronn | 05/17 15:35 | 27 | [225] Arthur De Greef v Matthias Bachinger [130] | 3-6,6-1,6-2 | |
| Challenger Heilbronn | 05/16 12:50 | 26 | [113] Thiago Monteiro v Arthur De Greef [225] | 6-7,6-2,6-7 | |
| Challenger Heilbronn | 05/14 12:55 | 25 | [225] Arthur De Greef v Yannick Maden [114] | 6-4,6-2 | |
| Challenger Heilbronn | 05/13 11:05 | 24 | [225] Arthur De Greef v Noah Rubin [169] | 6-2,6-2 | |
| Challenger Braga | 05/07 14:20 | 25 | [282] Carlos Taberner v Arthur De Greef [222] | 7-6,6-1 | |
| Challenger Ostrava | 05/02 08:00 | 26 | Arthur De Greef v Tomas Machac | 6-1,6-7,6-7 | |
| Challenger Ostrava | 05/01 08:00 | 25 | [176] Arthur De Greef v Benjamin Bonzi [295] | 6-2,3-6,6-3 | |
| Challenger Murcia | 04/10 14:15 | 25 | [176] Arthur De Greef v Bernabe Zapata Miralles [256] | 4-6,1-6 | |
| Challenger Alicante | 04/04 16:10 | 26 | [70] Pablo Andujar v Arthur De Greef [174] | 6-3,6-3 | |
| Challenger Alicante | 04/03 16:30 | 25 | [191] Jurij Rodionov v Arthur De Greef [174] | 1-6,2-6 | |
| Challenger Lille | 03/21 12:40 | 26 | [176] Arthur De Greef v Yannick Maden [108] | 3-6,4-6 | |
| Challenger Lille | 03/20 14:50 | 25 | [176] Arthur De Greef v Matteo Viola [246] | 6-3,6-1 | |
| Challenger Drummondville | 03/15 15:00 | 27 | [268] Matteo Viola v Arthur De Greef [183] | 6-3,7-5 | |
| Challenger Drummondville | 03/14 15:40 | 26 | [339] Vincent Millot v Arthur De Greef [183] | 4-6,7-5,3-6 | |
| Challenger Drummondville | 03/13 14:00 | 25 | [298] Ulises Blanch v Arthur De Greef [183] | 6-7,3-6 | |
| Challenger Pau | 02/27 19:50 | 25 | [188] Arthur De Greef v Steve Darcis [283] | 6-7,5-7 | |
| Challenger Bergamo | 02/23 17:30 | 28 | [209] Arthur De Greef v Roberto Marcora [250] | 6-7,6-4,1-6 | |
| Challenger Bergamo | 02/22 15:00 | 27 | [152] Luca Vanni v Arthur De Greef [209] | 6-7,4-6 | |
| Challenger Bergamo | 02/21 15:10 | 26 | [209] Arthur De Greef v Baptiste Crepatte [455] | 6-2,6-4 | |
| Challenger Bergamo | 02/20 12:10 | 25 | [209] Arthur De Greef v Danilo Petrovic [293] | 6-3,6-4 | |
| Challenger Cherbourg | 02/12 16:15 | 25 | [209] Arthur De Greef v Steve Darcis [313] | Retired | |
| Davis Cup | 02/02 19:40 | - | Rogerio D. Silva v Arthur De Greef | Cancelled | |
| Davis Cup | 02/01 18:00 | - | [107] Thiago Monteiro v Arthur De Greef [202] | 6-3,6-2 | |
| Challenger Koblenz | 01/16 14:00 | 25 | [287] Kaichi Uchida v Arthur De Greef [199] | 7-6,6-4 | |
| Australian Open | 01/08 04:10 | 44 | [106] Felix Auger Aliassime v Arthur De Greef [200] | 6-2,7-6 |