| ITF France F14 | 07/13 13:05 | - | 로우만, 레얀 v Rossier, Simeon | 7-5,5-7,7-6 | |
| ITF Germany F6 | 07/06 12:30 | - | Rossier, Simeon v 게르치, 루카스 | 4-6,2-6 | |
| ITF Germany F6 | 07/06 08:00 | - | Rossier, Simeon v 웰트, 밀란 | 6-0,6-3 | |
| ITF Turkey F31 | 06/18 08:00 | - | Rossier, Simeon v 일켈, 켐 | 4-6,4-6 | |
| ITF Turkey F23 | 06/09 11:25 | - | Jankovits, Yannick v Rossier, Simeon | 6-1,6-1 | |
| ITF Turkey F21 | 05/26 11:20 | - | Rossier, Simeon v Surreaux, Arthur | 0-6,0-6 | |
| ITF Israel F10 | 05/07 08:30 | - | Botzer, Bar Tzuf v Rossier, Simeon | 6-3,6-2 | |
| ITF Israel F10 | 05/06 06:30 | - | Rossier, Simeon v 코벨트, 피터 | 6-3,6-4 | |
| ITF Israel F10 | 04/30 06:30 | - | Rossier, Simeon v 마르틴, 토비 | 1-6,2-6 | |
| ITF Israel F10 | 04/28 06:30 | - | Rossier, Simeon v Semidockih, Pavel | 6-2,6-0 | |
| ITF Tunisia F5 | 04/21 09:00 | 44 | Girat Magin, Victor v Rossier, Simeon | 1-6,6-4,6-4 | |
| ITF Israel F3 | 03/23 08:30 | - | Rossier, Simeon v 크리소코스, 페트로스 | 6-2,2-6,3-6 | |
| ITF Israel F3 | 03/22 11:00 | - | Rossier, Simeon v 엘리아 알론 | 6-3,6-2 | |
| ITF Israel F3 | 03/22 10:30 | - | Rossier, Simeon v 베레메이축, 다닐로 | 6-2,6-2 | |
| ITF Israel F3 | 03/21 08:30 | - | Rossier, Simeon v Landa, Maxim | 6-2,5-7,6-3 | |
| ITF Israel F2 | 03/15 12:30 | - | Rossier, Simeon v Smith, Raleigh | 4-6,1-6 | |
| ITF Israel F2 | 03/15 09:30 | - | Rossier, Simeon v Tamir, Daniel | 6-1,7-5 | |
| ITF Israel F2 | 03/09 09:50 | - | Rossier, Simeon v 파타엘, 벤 | 1-6,6-7 | |
| ITF Egypt F33 | 03/04 08:00 | - | 노바크, 데니스 v Rossier, Simeon | 6-4,6-2 | |
| ITF Egypt F33 | 02/25 09:30 | - | Rossier, Simeon v 뉴크리스트, 맥시밀리안 | 3-6,2-6 | |
| ITF Egypt F33 | 02/23 09:50 | - | Rossier, Simeon v Yun, Jae Won | 4-6,7-6,6-2 | |
| France F24, Singles | 10/21 10:55 | - | Rossier, Simeon v Authom, Maxime | 3-6,3-6 | |
| ITF France F24 Qual | 10/19 12:05 | - | Rossier, Simeon v Masse, Valentin | 6-2,6-4 | |
| ITF France F22 | 10/10 12:00 | - | Boutillier, Remi v Rossier, Simeon | 6-1,6-2 | |
| ITF France F22 | 10/09 12:30 | - | 아렌즈, 샌더 v Rossier, Simeon | 7-6,4-6,4-6 | |
| ITF France F22 | 10/07 08:00 | - | Rossier, Simeon v 크레팔디, 에리크 | 6-0,7-5 | |
| ITF Germany F14 | 09/30 08:00 | - | Rossier, Simeon v Ruepke, Lukas | 4-6,5-7 | |
| ITF Germany F14 | 09/29 08:00 | - | Rossier, Simeon v Press, Frederik | 6-1,6-1 | |
| ITF Switzerland F5 | 08/25 09:20 | - | Bensoussan, Samuel v Rossier, Simeon | 6-3,7-5 | |
| ITF Switzerland F4 | 08/21 11:00 | - | Rossier, Simeon v 보셀, 아드리엔 | 3-6,2-6 |