房州山 · Jonidan · Sakaigawa stable · active
| Highest rank | Jonidan |
| Stable | Sakaigawa stable |
| From | Chiba-ken, Ichihara-shi |
| Born | 2004-06-23 |
| Height | 188 cm |
| Weight | 179.7 kg |
| First tournament | March 2020 |
The ring name is written 房州山. Taken character by character:
| 山 | mountain |
⚠️The characters 房, 州 are left out above: we do not yet have a meaning for them that we are sure of, and we would rather show a gap than a guess.
These are the dictionary meanings of the characters, not a statement about why this particular name was chosen — that is the stablemaster’s business, and we do not guess at it. How ring names are put together →
Boshuyama has fought 258 recorded bouts, winning 118 and losing 140 — a winning rate of 45.7%.
| Technique | Japanese | Wins | Share |
|---|---|---|---|
| Frontal force out | 寄り切り | 51 | 43.2% |
| Frontal push out | 押し出し | 24 | 20.3% |
| Slap down | 叩き込み | 12 | 10.2% |
| Frontal crush out | 寄り倒し | 6 | 5.1% |
| Frontal push down | 押し倒し | 5 | 4.2% |
| Hand pull down | 引き落とし | 5 | 4.2% |
| Over arm throw | 上手投げ | 4 | 3.4% |
| Rear push out | 送り出し | 2 | 1.7% |
Counted from his winning bouts in this database. English names follow NHK WORLD-JAPAN. All 87 techniques →
| Opponent | Bouts | Won | Lost |
|---|---|---|---|
| Azumanami | 5 | 5 | 0 |
| Tsukioka | 4 | 1 | 3 |
| Naniwamusashi | 4 | 2 | 2 |
| Suigafuji | 4 | 1 | 3 |
| Kukio | 4 | 4 | 0 |
| Watatani | 4 | 3 | 1 |
| Kinseiryu Yuri | 3 | 1 | 2 |
| Mikinosato | 3 | 1 | 2 |
| Tournament | Rank | Record |
|---|---|---|
| July 2026 | Jonidan 65 East | 5–2 |
| May 2026 | Jonidan 33 West | 2–5 |
| March 2026 | Jonidan 61 East | 4–3 |
| January 2026 | Jonidan 26 West | 2–5 |
| November 2025 | Jonidan 54 West | 4–3 |
| September 2025 | Jonidan 18 West | 2–5 |
| July 2025 | Jonidan 41 West | 4–3 |
| May 2025 | Jonidan 85 East | 5–2 |
| March 2025 | Jonidan 73 East | 3–4 |
| January 2025 | Jonidan 53 West | 3–4 |
| November 2024 | Jonidan 18 East | 3–4 |
| September 2024 | Jonidan 41 East | 4–3 |
| July 2024 | Jonidan 7 East | 2–5 |
| May 2024 | Jonidan 28 West | 4–3 |
| March 2024 | Jonidan 56 West | 4–3 |
The Japanese side of this site carries seven pages on Boshuyama: tournament-by-tournament results, every bout he has fought, head-to-head records against all opponents, a breakdown of his winning techniques, a reading of his fighting style, and his records.