Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 - Valldoreix | 2021/05/11 09:00 | Juan Bautista Otegui v Xavi Matas Ortega | 7-5,6-3 |
| ITF M15 - Valldoreix | 2021/05/10 10:00 | Pedro Vives Marcos v Juan Bautista Otegui | 6-2,3-6,1-10 |
| ITF M15 - Valldoreix | 2021/05/09 12:00 | Juan Bautista Otegui v Xavier Gabarro | 6-2,6-4 |
| ITF M15 - Majadahonda | 2021/05/03 10:45 | Pol Toledo Bague v Juan Bautista Otegui | 6-2,7-5 |
| ITF M15 - Majadahonda | 2021/05/02 13:15 | Juan Bautista Otegui v Diego F Flores | 6-3,6-4 |
| UTR Pro Tennis Series - Pazardzjik | 2021/03/31 08:30 | Thomas Laurent v Juan Bautista Otegui | 7-5,5-4 |
| UTR Pro Tennis Series - Pazardzjik | 2021/03/30 07:00 | Dinko Dinev v Juan Bautista Otegui | 1-6,1-5 |
| ITF - M15 Opatija | 2021/03/24 10:45 | Giovanni Fonio v Juan Bautista Otegui | 6-3,6-4 |
| ITF M15 - Majadahonda | 2021/05/02 13:15 | Mario G Fernandez v Carlos Lopez Montagud | 1-6,2-6 |
| ITF M25 - Reus | 2021/04/11 11:00 | Titouan Droguet v Mario G Fernandez | 6-2,6-4 |
| ITF - M15 Antalya | 2021/03/02 07:00 | Stefan Palosi v Mario G Fernandez | 4-6,6-0,10-5 |
| ITF - M15 Antalya | 2021/03/01 10:00 | Mario G Fernandez v Marlon Vankan | 1-6,6-2,13-11 |
| ITF - M15 Antalya | 2021/02/28 08:00 | Mario G Fernandez v Adrian Mateo Bejenaru | 5-7,6-4,11-9 |
| ITF M25 - Villena | 2021/02/01 08:30 | Mario G Fernandez v Ugo Blanchet | 3-6,6-7 |
| ITF M15 Torello | 2020/12/10 12:00 | Mario G Fernandez v Mattia Bellucci | 5-7,1-6 |
| ITF M15 Torello | 2020/12/08 09:00 | Jordi Mas De Ugarte v Mario G Fernandez | 3-6,4-6 |