Stadium: Pista 1 Round: 25 Ground: Hardcourt outdoor
| Davis Cup | 2021/06/19 10:00 | Petros Chrysochos v Lucas Catarina | 4-6,6-3,6-3 |
| Davis Cup | 2021/06/17 09:30 | Lucas Catarina v Simon Carr | 4-6,4-6 |
| Davis Cup | 2021/06/16 09:05 | Lucas Catarina v Liam Delicata | 6-0,6-1 |
| ITF M15 Helsinki | 2021/06/05 07:00 | Lucas Catarina v Lilian Marmousez | 3-6,3-6 |
| ITF M15 Helsinki | 2021/06/04 07:00 | Lucas Catarina v Clement Tabur | 4-6,7-5,6-3 |
| ITF M15 Helsinki | 2021/06/03 08:50 | Lucas Catarina v Andrea Del Federico | 6-0,6-2 |
| ITF M15 Helsinki | 2021/06/02 06:30 | Lucas Catarina v Vladimir Ivanov | 7-5,1-6,6-2 |
| Challenger Oeiras | 2021/05/24 10:00 | Lucas Catarina v Nikolas Sanchez Izquierdo | 4-6,2-6 |
| ITF M25 Bakio | 2021/06/28 16:20 | Juan Bautista Otegui v Pol Amoros Ramos | 6-2,6-2 |
| ITF M15 Bergamo | 2021/06/21 09:40 | Simone Roncalli v Juan Bautista Otegui | 6-3,6-2 |
| ITF M15 Genova | 2021/06/16 08:00 | Johan Sebastien Tatlot v Juan Bautista Otegui | 6-1,6-4 |
| ITF M15 Genova | 2021/06/15 08:50 | Juan Bautista Otegui v Andrea Guerrieri | 6-3,6-1 |
| ITF M15 Valldoreix | 2021/05/14 08:00 | Alvaro Lopez San Martin v Juan Bautista Otegui | 6-3,1-6,6-2 |
| ITF M15 Valldoreix | 2021/05/13 09:50 | Juan Bautista Otegui v Maxime Hamou | 6-3,7-5 |
| ITF M15 Valldoreix | 2021/05/12 11:00 | Juan Bautista Otegui v Mario G Fernandez | 6-4,6-3 |
| ITF M15 Valldoreix | 2021/05/11 09:00 | Juan Bautista Otegui v Xavi Matas Ortega | 7-5,6-3 |