Rikishi Profile
Basic Information
| Hamayutaka Koki | |
| Stable | Tokitsukaze |
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| Name | Koki Hayasaka |
| Ring Name | Hamayutaka |
| Current Rank | Makushita #29 |
| Birthday | November 17, 1995 |
| Birthplace | Kanagawa |
| Height | 182.4cm |
| Weight | 137.1kg |
| Signature Maneuver | /oshi |
Tournament Records
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2025 January
East Makushita #29 Hamayutaka Koki 5-2 |
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| Kitadaichi | Yutakasho | Hananoumi | Seihakuho | Fujinoyama | Tochiseiryu | Fukai | |||||||||
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2024 November
West Makushita #23 Hamayutaka Koki 3-4 |
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| Yuma | Yutakasho | Asonoyama | Tosamidori | Tochiseiryu | Tsushimanada | Kotokenryu | |||||||||
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2024 September
East Makushita #31 Hamayutaka Koki 4-3 |
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| Tendozan | Hinataryu | Inami | Kyokukaiyu | Toseiryu | Tosamidori | Wakatakamoto | |||||||||
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2024 July
East Makushita #47 Hamayutaka Koki 5-2 |
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| Dewanojo | Hinataryu | Taiga | Kurohimeyama | Takakento | Tochikodai | Awanokuni | |||||||||
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2024 May
West Makushita #22 Hamayutaka Koki 1-6 |
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| Fukai | Yoshiyasu | Fujinoyama | Asakoki | Narutaki | Asonoyama | Hokutomaru | |||||||||
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2024 March
West Makushita #38 Hamayutaka Koki 5-2 |
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| Yoshiyasu | Asakoki | Akinoyama | Kotoozutsu | Asonoyama | Shiroma | Ryusei |
- ○･･･win
- ●･･･lose
- □･･･win by default
- ■･･･lose by default
- a･･･absent･No efforts
- ×･･･draw
- △･･･draw due to injury
- R･･･Retired
- The ring name used at the time is being displayed.
Stablemates
 east maegashira #4Shodai |
Tokitsukaze |
 west maegashira #17Tokihayate |
Tokitsukaze |
Rikishi from Kanagawa Prefecture
 East Maegashira #13Shonannoumi |
Kanagawa |
 West Juryo #6Tomokaze |
Kanagawa |
West Maegashira #10
West Juryo #7
West Juryo #10