| | Year | Tournament | Position |
|
First Name:
|
Keita
|
|
Last Name:
|
Nakajima
|
|
Hometown:
|
|
|
St/Prov:
|
|
|
Country:
|
JPN
|
|
Rank:
|
27
|
| 2018 | Australian Open (Australasia Tour) | T5 |
| 2018 | NSW Open (Australasia Tour) | T43 |
| 2018 | Mynavi ABC (Japan Tour) | T38 |
| 2018 | Asia-Pacific Amateur | T2 |
| 2018 | Asia-Pacific Diamond Cup (Japan Tour) | T48 |
| 2018 | Asian Games | Champion |
| 2018 | Japan Junior | 3rd |
| 2018 | Kanto Junior (JPN) | T5 |
| 2018 | Junior World Cup (JPN) | T14 |
| 2018 | Kanto Amateur (JPN) | T7 |
| 2018 | Australian Amateur | Champion |
| 2017 | NSW Open (Australasia Tour) | T27 |
| 2017 | Asia-Pacific Amateur | T17 |
| 2017 | Duke of York Junior (ENG) | T2 |
| 2017 | Japan Open Final Qualifying | T16 |
| 2017 | Kanto Junior (JPN) | T4 |
| 2017 | Japan Amateur | T2 |
| 2017 | Kanto Amateur (JPN) | Champion |
| 2017 | High School Spring (JPN) | T7 |
| 2017 | Faldo Series Final U21 (Asia) | 13th |
| 2016 | Casio World Open (Japan Tour) | T60 |