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Athlete |
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Stage |
Result |
Placement |
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  400 m hurdles M - Paris 2024 |
|
| Daiki Ogawa | Repechage |
49,25 |
5 |
|
|
|
| Round 1 |
50,21 |
6 |
|
|
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| Kaito Tsutsue | Repechage |
dns |
|
|
|
| Round 1 |
50,50 |
7 |
|
|
|
| Ken Toyoda | Repechage |
dns |
|
|
|
| Round 1 |
53,62 |
6 |
|
|
|
|
|
| 400 m hurdles M - Tokyo 2020 |
|
| Takatoshi Abe | Round 1 |
49,98 |
6 |
|
|
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| Hiromu Yamauchi | Semifinal |
49,35 |
6 |
|
|
| Round 1 |
49,21 |
3 |
Q |
|
|
| Kazuki Kurokawa | Round 1 |
50,30 |
6 |
|
|
|
|
|
| 400 m hurdles M - Rio de Janeiro 2016 |
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| Keisuke Nozawa | Semifinal |
49,20 |
6 |
|
|
|
| Round 1 |
48,62 |
1 |
Q |
|
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| Yuki Matsushita | Round 1 |
49,60 |
4 |
|
|
|
|
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| 400 m hurdles M - London 2012 |
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| Takayuki Kishimoto | Round 1 |
dq |
|
|
|
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| Akihiko Nakamura | Round 1 |
dq |
|
|
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| Tetsuya Tateno | Round 1 |
49,95 |
4 |
|
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|
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| 400 m hurdles M - Beijing 2008 |
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| Dai Tamesue | Round 1 |
49,82 |
4 |
|
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| Kenji Narisako | Round 1 |
49,63 |
5 |
|
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|
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| 400 m hurdles M - Athens 2004 |
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| Dai Tamesue | Semifinal |
48,46 |
3 |
|
|
|
| Round 1 |
48,80 |
3 |
Q |
|
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| Ken Yoshizawa | Round 1 |
50,95 |
6 |
|
|
|
|
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| 400 m hurdles M - Sydney 2000 |
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| Dai Tamesue | Round 1 |
61,81 |
8 |
|
|
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| Kazuhiko Yamazaki | Round 1 |
50,15 |
7 |
|
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| Hideaki Kawamura | Round 1 |
50,68 |
4 |
|
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| 400 m hurdles M - Atlanta 1996 |
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| Shunji Karube | Round 1 |
48,96 |
5 |
|
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| Kazuhiko Yamazaki | Round 1 |
49,07 |
3 |
|
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| Hideaki Kawamura | Round 1 |
49,88 |
4 |
|
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| 400 m hurdles M - Barcelona 1992 |
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| Kazuhiko Yamazaki | Round 1 |
50,30 |
4 |
|
|
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| Yoshihiko Saito | Round 1 |
49,01 |
4 |
|
|
|
|
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| 400 m hurdles M - Seoul 1988 |
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| Ryoichi Yoshida | Round 1 |
50,49 |
5 |
|
|
|
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| 400 m hurdles M - Los Angeles 1984 |
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| Ryoichi Yoshida | Semifinal |
50,69 |
7 |
|
|
|
| Round 1 |
50,24 |
2 |
Q |
|
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| Shigenori Omori | Round 1 |
50,14 |
5 |
|
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| 400 m hurdles M - Mexico City 1968 |
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| Kiyoo Yui | Round 1 |
51,5 |
5 |
|
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| 400 m hurdles M - Tokyo 1964 |
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| Kiyoo Yui | Round 1 |
54,7 |
7 |
|
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| Keiji Ogushi | Round 1 |
53,6 |
5 |
|
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| Keiko Iijima | Round 1 |
52,8 |
5 |
|
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| 400 m hurdles M - Rome 1960 |
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| Keiji Ogushi | Round 1 |
52,4 |
3 |
|
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| 400 m hurdles M - Melbourne 1956 |
|
| Keiji Ogushi | Round 1 |
53,2 |
3 |
|
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| 400 m hurdles M - Helsinki 1952 |
|
| Eitaro Okano | Quarterfinal |
54,4 |
6 |
|
|
|
| Round 1 |
54,2 |
3 |
Q |
|
|
|
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| 400 m hurdles M - Berlin 1936 |
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| Tokio Fukuda | Round 1 |
56,8 |
4 |
|
|
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| Masao Ichihara | Round 1 |
54,7 |
4 |
|
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| 400 m hurdles M - Los Angeles 1932 |
|
| Seiken Cho | Round 1 |
-- |
4 |
Q |
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Future Olympics 
