| | Year | Tournament | Position |
|
First Name:
|
William
|
|
Last Name:
|
Mouw
|
|
Hometown:
|
Chino
|
|
St/Prov:
|
CA
|
|
Country:
|
USA
|
|
Rank:
|
44
|
| 2021 | Western Intercollegiate (CA, USA) | T15 |
| 2021 | Augusta Haskins Inv (collegiate, GA, USA) | T12 |
| 2021 | Valspar Collegiate (FL, USA) | T22 |
| 2021 | Prestige (collegiate, CA, USA) | T29 |
| 2021 | Southwestern Invitational (CA, USA) | 25 |
| 2020 | Maridoe Invitational (TX, USA) | T10 |
| 2020 | Pasadera Collegiate (CA, USA) | T7 |
| 2020 | US Amateur | 16's |
| 2020 | Western Amateur (IL, USA) | T17 |
| 2020 | Sunnehanna Amateur (PA, USA) | T9 |
| 2020 | Southern Amateur (USA) | T9 |
| 2020 | Southern Highlands Collegiate (NV, USA) | T21 |
| 2020 | Amer Ari Invitational (HI, USA) | Champion |
| 2020 | Southwestern Invitational (CA, USA) | T8 |
| 2019 | GC of Georgia Collegiate (USA) | T11 |
| 2019 | MacKenzie Inv (collegiate, CA, USA) | 7th |
| 2019 | Olympia Fields Illini Invite (IL, USA) | 3rd |
| 2019 | Maui Jim Intercollegiate (AZ, USA) | T8 |
| 2019 | Western Amateur (IL, USA) | T38 |
| 2019 | US Junior | 32's |
| 2019 | US Junior - medal | Co-Med |
| 2019 | California State Amateur (USA) | Champion |
| 2019 | AJGA Thunderbird Int'l Inv (AZ, USA) | Champion |
| 2019 | Junior Invitational (GA, USA) | T10 |
| 2019 | AJGA April Open (AZ, USA) | Champion |