Stadium: Court 2 Round: 62
| ITF M15 Platja D'Aro | 2021/10/03 08:00 | Pietro Pampanin v Sigurdsson, Egill | 1-6,7-5,10-5 |
| ITF M15 Cairo | 2021/09/05 08:30 | Samir Hamza Reguig v Sigurdsson, Egill | 3-6,6-3,16-14 |
| ITF M15 Oldenzaal | 2021/08/15 08:30 | Sigurdsson, Egill v Guttau, Niklas | 1-6,4-6 |
| ITF M15 Cairo | 2021/08/02 11:30 | Ivanov, Vladislav v Sigurdsson, Egill | 6-2,6-4 |
| ITF M15 Cairo | 2021/07/28 12:25 | Sigurdsson, Egill v Lorenzo Bocchi | 0-6,3-6 |
| ITF M15 Cairo | 2021/07/19 10:30 | Nicolas Hollender v Sigurdsson, Egill | 6-1,3-6,10-6 |
| ITF M15 Cairo | 2021/07/18 13:00 | Sergo Sikharulidze v Sigurdsson, Egill | 4-6,6-3,8-10 |
| Coupe Davis | 2021/06/19 09:35 | Sigurdsson, Egill v Raphael Calzi | 4-6,0-6 |
| ITF M15 Platja D'Aro | 2021/10/05 08:30 | Ktiri, Marc Othman v Maik Steiner | 6-4,4-6,7-10 |
| ITF M15 Platja D'Aro | 2021/10/04 11:00 | Franco Emanuel Egea v Ktiri, Marc Othman | 6-2,4-6,10-12 |
| ITF M15 Platja D'Aro | 2021/10/03 12:00 | Serra Sanchez, Nacho v Ktiri, Marc Othman | 2-6,3-6 |
| ITF M15 Novi Sad | 2021/07/25 09:30 | Ktiri, Marc Othman v Gorazd Srbljak | 4-6,1-6 |
| ATP Mallorca | 2021/06/19 13:45 | Lucas Pouille v Ktiri, Marc Othman | 5-7,6-2,6-2 |
| ITF - M15 Antalya | 2021/02/22 07:00 | Madaras, Dragos Nicolae v Ktiri, Marc Othman | 1-6,6-4,10-6 |
| ITF - M15 Antalya | 2021/02/21 13:00 | Onder Balci v Ktiri, Marc Othman | 1-6,2-6 |
| ITF - M15 Antalya | 2021/02/14 12:00 | Ktiri, Marc Othman v Aaron Cohen | 3-6,4-6 |