| Athletes |
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Biographical data for: Ryosuke SAKAZUME
| Classifications in season 2008/2009: |
| Results in season 2008/2009: |
| 500 meter |
| 42 | .947 | 30/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Heats | |
| 43 | .094 | 28/11/08 | Beijing CHN | Samsung ISU World Cup | Preliminaries | |
| 43 | .281 | 30/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Quarterfinals | |
| 43 | .284 | 10/01/09 | Sherbrooke, NS CAN | World Junior Championships | Heats | |
| 44 | .180 | 10/01/09 | Sherbrooke, NS CAN | World Junior Championships | Preliminaries | |
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| 1000 meter |
| 1:28 | .862 | 11/01/09 | Sherbrooke, NS CAN | World Junior Championships | Heats | |
| 1:30 | .418 | 26/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Quarterfinals | |
| 1:31 | .062 | 24/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Heats | |
| 1:31 | .940 | 24/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Preliminaries | |
| 1:33 | .846 | 11/01/09 | Sherbrooke, NS CAN | World Junior Championships | Quarterfinals | |
| 1:34 | .835 | 11/01/09 | Sherbrooke, NS CAN | World Junior Championships | Preliminaries | |
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| 1500 meter |
| 2:15 | .096 | 06/12/08 | Nagano JPN | Samsung ISU World Cup | Semifinals | |
| 2:15 | .781 | 18/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Final, Final A | |
| 2:16 | .819 | 19/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Semifinals | |
| 2:17 | .135 | 17/10/08 | Salt Lake City USA | Samsung ISU World Cup | Heats | |
| 2:17 | .620 | 06/12/08 | Nagano JPN | Samsung ISU World Cup | Final, Final B | |
| 2:18 | .565 | 17/10/08 | Salt Lake City USA | Samsung ISU World Cup | Heats | |
| 2:18 | .707 | 09/01/09 | Sherbrooke, NS CAN | World Junior Championships | Semifinals | |
| 2:18 | .783 | 29/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Semifinals | |
| 2:18 | .783 | 29/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Quarterfinals | |
| 2:19 | .100 | 18/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Quarterfinals | |
| 2:20 | .035 | 05/12/08 | Nagano JPN | Samsung ISU World Cup | Heats | |
| 2:20 | .553 | 18/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Semifinals | |
| 2:21 | .656 | 25/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Rep Quarterfinals | |
| 2:21 | .776 | 28/11/08 | Beijing CHN | Samsung ISU World Cup | Quarterfinals | |
| 2:21 | .776 | 28/11/08 | Beijing CHN | Samsung ISU World Cup | Heats | |
| 2:22 | .314 | 07/12/08 | Nagano JPN | Samsung ISU World Cup | Rep Semifinals | |
| 2:22 | .888 | 05/12/08 | Nagano JPN | Samsung ISU World Cup | Heats | |
| 2:23 | .445 | 29/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Semifinals | |
| 2:23 | .445 | 29/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Quarterfinals | |
| 2:23 | .669 | 09/01/09 | Sherbrooke, NS CAN | World Junior Championships | Heats | |
| 2:24 | .740 | 07/12/08 | Nagano JPN | Samsung ISU World Cup | Rep Final, Final B | |
| 2:24 | .884 | 09/01/09 | Sherbrooke, NS CAN | World Junior Championships | Quarterfinals | |
| 2:26 | .130 | 24/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Heats | |
| 2:27 | .116 | 25/10/08 | Vancouver, BC CAN | Samsung ISU World Cup | Rep Final, Final B | |
| 2:32 | .030 | 19/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Quarterfinals | |
| 2:44 | .664 | 29/11/08 | Beijing CHN | Samsung ISU World Cup | Rep Final, Final A | |
| DQ | 19/10/08 | Salt Lake City USA | Samsung ISU World Cup | Rep Final, Final B | |
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| 3000 meter relay |
| 4:09 | .589 | 09/01/09 | Sherbrooke, NS CAN | World Junior Championships | Heats | |
| (JAPAN: Satoshi Sakashita, Ryosuke Sakazume, Keita Watanabe, Takashi Yoshida) |
| DQ | 10/01/09 | Sherbrooke, NS CAN | World Junior Championships | Semifinals | |
| (JAPAN: Satoshi Sakashita, Ryosuke Sakazume, Keita Watanabe, Takashi Yoshida) |
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