Ryu Kosaka
| full name | Ryu Kosaka | |
| nationality | Japan (JPN) | |
| born | June 1993 | in unknown |
World Cup - Top 10 positions
| discipline | 1st | 2nd | 3rd | 4th-6th | 7th-10th | starts |
| 500 meters | 0 | 0 | 0 | 0 | 0 | 1 |
| 1000 meters | 0 | 0 | 0 | 0 | 0 | 1 |
| total | 0 | 0 | 0 | 0 | 0 | 2 |
World Cup - All results
| seizoen | position | date | disclipline | place | ||
| 2018-19 | B | 5 | 2 Feb 2019 | 1000 meters | Hamar | NOR |
| B | 6 | 3 Feb 2019 | 500 meters | Hamar | NOR | |
