Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Bergamo | 2019/02/21 15:10 | Arthur De Greef v Baptiste Crepatte | 6-2,6-4 |
| Challenger Bergamo | 2019/02/20 12:10 | Arthur De Greef v Danilo Petrovic | 6-3,6-4 |
| Davis Cup | 2019/02/01 18:00 | Thiago Monteiro v Arthur De Greef | 6-3,6-2 |
| Challenger Koblenz | 2019/01/16 14:00 | Kaichi Uchida v Arthur De Greef | 7-6,6-4 |
| Australian Open | 2019/01/08 04:10 | Felix Auger Aliassime v Arthur De Greef | 6-2,7-6 |
| Challenger Playford | 2019/01/01 06:50 | Arthur De Greef v Casper Ruud | 1-6,3-6 |
| Challenger Playford | 2018/12/31 04:50 | Stefano Napolitano v Arthur De Greef | 3-6,6-3,5-7 |
| Challenger Buenos Aires | 2018/11/14 16:00 | Arthur De Greef v Pablo Andujar | 1-6,2-6 |
| Challenger Morelos | 2019/02/19 16:00 | Alejandro Gonzalez v Johannes Haerteis | 6-3,6-1 |
| ITF M25 Barnstaple | 2019/02/12 10:00 | Jack Draper v Johannes Haerteis | 7-6,6-3 |
| Challenger Koblenz | 2019/01/15 12:45 | Filip Horansky v Johannes Haerteis | 7-6,6-4 |
| Challenger Koblenz | 2019/01/14 15:40 | Johannes Haerteis v Vaclav Safranek | 7-6,4-6,6-3 |
| Challenger Bratislava | 2018/11/06 15:15 | Johannes Haerteis v Lukas Rosol | 3-6,3-6 |
| Challenger Bratislava | 2018/11/05 10:00 | Johannes Haerteis v Ante Pavic | 4-6,7-5,7-6 |
| Challenger Bratislava | 2018/11/04 12:20 | Matteo Viola v Johannes Haerteis | 3-6,6-7 |
| Challenger Bratislava | 2018/11/03 15:15 | Thomas Statzberger v Johannes Haerteis | 4-6,4-6 |