| Challenger Series TT | 10/04 11:10 | 1 | Leonardo Iizuka v Daniel Rinderer | W | 3-0 | |
| Challenger Series TT | 10/04 09:45 | - | Mykhailo Mosiuk v Leonardo Iizuka | W | 1-3 | |
| Challenger Series TT | 10/04 09:15 | 2 | Mykhailo Mosiuk v Leonardo Kenzo Iizuka | W | 1-3 | |
| Challenger Series TT | 10/04 09:15 | - | Nazar Mosiuk v Leonardo Iizuka | W | 1-3 | |
| Challenger Series TT | 10/04 08:30 | - | Leonardo Kenzo Iizuka v Akos Kishegyi | W | 3-1 | |
| Challenger Series TT | 10/04 06:30 | - | Leonardo Kenzo Iizuka v Marco Stefanidis | W | 3-1 | |
| Challenger Series TT | 10/03 16:00 | - | Leonardo Kenzo Iizuka v Mykhailo Mosiuk | L | 1-3 | |
| Challenger Series TT | 10/03 12:30 | - | Leonardo Kenzo Iizuka v Daniel Rinderer | W | 3-0 | |
| Challenger Series TT | 10/03 11:00 | - | Leonardo Kenzo Iizuka v Tobias Saltzer | L | 1-3 | |
| Challenger Series TT | 10/03 08:30 | - | Olav Kosolosky v Leonardo Kenzo Iizuka | L | 3-2 | |
| Challenger Series TT | 10/03 07:00 | - | Leonardo Kenzo Iizuka v Damian Zech | W | 3-1 | |
| WTT Feeder Olomouc | 08/22 14:00 | 6 |
Leonardo Iizuka
v
Licen Yuan
|
L | 0-3 | |
| ITTF South American Champs | 06/14 19:00 | - | Leonardo Iizuka v Martin Bentancor | L | 1-3 | |
| ITTF South American Champs | 06/13 23:00 | - | Leonardo Iizuka v Leandro Fuentes | W | 3-1 | |
| ITTF South American Champs | 06/13 21:00 | - | Leonardo Iizuka v Jeremy Cedeno | W | 3-0 | |
| ITTF South American Champs | 06/13 15:30 | - | Leonardo Iizuka v David Leon | W | 3-0 | |
| WTT Contender Mendoza Quals | 05/28 15:45 | - |
Leonardo Iizuka
v
Cedric Nuytinck
|
L | 0-3 | |
| WTT Contender Rio De Janeiro | 05/24 21:35 | 4 |
Leonardo Iizuka
v
Shunsuke Togami
|
L | 0-3 | |
| WTT Contender Rio De Janeiro | 05/23 19:05 | 5 | Leonardo Iizuka v Can Akkuzu | W | 3-1 | |
| WTT Contender Rio Quals | 05/22 19:25 | - |
Luka Mladenovic
v
Leonardo Iizuka
|
W | 1-3 | |
| WTT Contender Rio Quals | 05/21 20:30 | - | Leonardo Iizuka v Adrien Rassenfosse | W | 3-2 | |
| WTT Contender Rio Quals | 05/20 17:35 | 6 | Tzu-Yi Yang v Leonardo Iizuka | W | 1-3 | |
| Challenger Series TT | 05/07 11:00 | 50 | Mike Hollo v Leonardo Iizuka | L | 3-1 | |
| Challenger Series TT | 05/07 10:15 | 2 | Enio Mendes v Leonardo Iizuka | L | 3-1 | |
| Challenger Series TT | 05/07 07:40 | - | Daniel Rinderer v Leonardo Iizuka | W | 2-3 | |
| Challenger Series TT | 05/07 06:30 | - | Sven Happek v Leonardo Iizuka | W | 0-3 | |
| Challenger Series TT | 05/06 15:50 | - | Marius Henninger v Leonardo Iizuka | L | 3-2 | |
| Challenger Series TT | 05/06 14:05 | - | Mike Hollo v Leonardo Iizuka | W | 1-3 | |
| Challenger Series TT | 05/06 11:45 | - | Enio Mendes v Leonardo Iizuka | W | 2-3 | |
| Challenger Series TT | 05/06 10:35 | - | Dennis Klein v Leonardo Iizuka | L | 3-0 |