Data Oyakata
Grand Sumo Predictions
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Analysis8

Is promotion to sanyaku a real wall?

27.7% Kachi-koshi rate for newly promoted sanyaku

Conclusion

The wall is real. Rikishi making their first appearance at Komusubi or Sekiwake averaged 6.16 wins, and only 27.7% made kachi-koshi. Facing Yokozuna and Ozeki day after day is a measurable step up in difficulty.

Methodology

Period
2000 Hatsu Basho~2026 Natsu Basho
Sample
Basho went to Komusubi or Sekiwake for the first time and took 15 bouts.
Sample size
83Basho
Calculation
8 wins or more23Basho with a winning record rate of 27.7%. Average 6.16 wins
comparison
Komusubi overall is 42.3% (310Basho), average 6.96 wins

How to read this

The momentum before promotion and the strength of the opponent are not individually arranged.