VS
| Kokubun | Copenhaver |
 |
 |
 Japan
United States of America 
|
||
|---|---|---|
| 1 | WINS AGAINST THE OTHER | 1 |
| 7 | STARTS | 42 |
| 1 | WINS | 2 |
| 14 | % WINS | 5 |
| 4 | PODIUMS | 12 |
| 57 | % PODIUMS | 29 |
| 5 | TOP 5 | 24 |
| 71 | % TOP 5 | 57 |
| 6 | TOP 10 | 39 |
| 86 | % TOP 10 | 93 |
| 4 | AVERAGE FINISH | 6 |