| | Year | Tournament | Position |
|
First Name:
|
Mateo
|
|
Last Name:
|
Fernandez de O
|
|
Hometown:
|
Beccar
|
|
St/Prov:
|
|
|
Country:
|
ARG
|
|
Rank:
|
13
|
| 2023 | Linger Longer Invitational (GA, USA) | T10 |
| 2023 | Cabo Collegiate (MEX) | T19 |
| 2023 | Williams Collegiate (AL, USA) | Champion |
| 2023 | Hayt Collegiate (FL, CA) | T6 |
| 2023 | Latin America Amateur | Champion |
| 2022 | South American Team (W/T/L) | 13/1/0 |
| 2022 | Blessings Intercollegiate (AR, USA) | T15 |
| 2022 | SEC Match | 1/0/0 |
| 2022 | US Am - Stroke | T21 |
| 2022 | Western Amateur (IL, USA) | Finalist |
| 2022 | Western Am - Stroke (USA) | T4 |
| 2022 | Palmer Cup | 4/0/0 |
| 2022 | European Amateur | T5 |
| 2022 | NCAA D1 National (USA) | 9th |
| 2022 | NCAA D1 Ohio Regional (USA) | T15 |
| 2022 | Aggie Invitational (TX, USA) | T15 |
| 2022 | National Invitational (collegiate, AZ, USA) | T23 |
| 2022 | Cabo Collegiate (MEX) | T10 |
| 2022 | Arizona Intercollegiate (USA) | T10 |
| 2022 | Latin America Amateur | T2 |
| 2022 | South American Amateur | Champion |
| 2021 | South American Team (W/T/L) | 12/1/3 |
| 2021 | Spirit International (TX, USA) | 15th |
| 2021 | Stephens Cup - Stroke (USA) | Champion |
| 2021 | SEC Match (W/T/L) | 2/0/1 |
| 2021 | Blessings Intercollegiate (AR, USA) | T2 |
| 2021 | Carmel Cup (CA, USA) | T3 |
| 2021 | US Amateur | 32's |
| 2021 | US Am - Stroke | T37 |
| 2021 | Western Am - Stroke (USA) | T17 |
| 2021 | Southern Amateur (USA) | T41 |
| 2021 | US Amateur Qualifying (3 spots) | 3rd |
| 2021 | Maridoe Am - stroke (TX, USA) | 13th |
| 2021 | NCAA D1 Florida Regional (USA) | T23 |
| 2021 | Big 12 (collegiate, USA) | 9th |
| 2021 | Thunderbird Collegiate (AZ, USA) | T13 |