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Sumio Oka
| Last name | Oka |
| First name | Sumio |
| Gender | Male |
| Birthdate | - Unknown - |
| Country | JPN |
| 500m | 42,92 (Red Deer, 21.01.1989) |
| 1.500m | 2.21,75 (Edmonton, 15.01.1989) |
| 3.000m | 4.52,79 (Red Deer, 21.01.1989) |
| 5.000m | 8.29,80 (Edmonton, 15.01.1989) |
| Small Combo | 189,948 |
| Latest update in | 1989 |
JPN