Full name: Seiya Sakamoto
Original name: 坂本 征也
Gender: Male
Height: 5'6" (168 cm)
Weight: 139 lbs (63 kg)
Born: October 24, 1944 in [unknown], Kumamoto, Japan
Country:
Japan
Sport: Water Polo
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 1968 Summer | 23 | Ciudad de México | Water Polo | Men's Water Polo | Japan | JPN | 12 |
| Games | Age | City | Sport | Team | NOC | Phase | Unit | Rank | Date | Result | G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Final Round | Match 11/12 | 2 | 1968-10-25 | MEX 5, JPN 4 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Classification Round 9-12 | Match #1 | 2 | 1968-10-24 | ESP 5, JPN 0 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #3 | 2 | 1968-10-14 | ITA 9, JPN 2 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #6 | 1 | 1968-10-15 | JPN 8, GRE 7 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #12 | 2 | 1968-10-17 | NED 9, JPN 1 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #14 | 1 | 1968-10-19 | JPN 7, EGY 4 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #17 | 2 | 1968-10-20 | GDR 8, JPN 0 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #22 | 1 | 1968-10-21 | JPN 6, MEX 3 | 0 |
| 1968 Summer | 23 | Ciudad de México | Water Polo | Japan | JPN | Group B | Match #27 | 2 | 1968-10-22 | YUG 17, JPN 2 | 0 |