Tokyo, May 25, 2025, The 2025 Natsu Basho, held at Ryōgoku Kokugikan from May 11 to 25, saw Onosato dominate the field, clinch the Emperor’s Cup and make the leap to Yokozuna. While a flawless 15-0 record eluded him, this tournament underscored his arrival amongst sumo’s elite. Source
Key Highlights
Onosato’s Yūshō and Promotion to Yokozuna
- Onosato claimed the top division championship, finishing with an outstanding record and earning promotion to become the 75th Yokozuna. Source
- His only loss came on the final day against Hōshōryū, denying him a perfect 15-0 tournament but underscoring the depth of competition. Source
Special Prizes & Standout Records
- Kirishima earned the Technique Prize for his variety of winning techniques. Source
- Aonishiki was awarded the Fighting Spirit Prize, continuing his strong run. Source
Tournament Structure & Prelude
- The basho followed the standard 15-day format across all divisions, with wrestlers competing for yūshō (championship), special prizes, and rank adjustments (banzuke). Source
- Ryōgoku Kokugikan in Tokyo once again served as the stage for Japan’s summer grand tournament. Source
What This Means for Sumo
Onosato’s rise to Yokozuna confirms that sumo’s next era is upon us. His dominance in this basho, despite one late ajar moment—cements him as the benchmark for others. The performances by Kirishima, Aonishiki and others reinforce that the maegashira ranks and komusubi/sekiwake levels are producing serious challengers. The mantle has shifted, but the competition remains razor-thin.
Final Thoughts
The 2025 Natsu Basho was less about upsets and more about affirmation: Onosato’s elevation, the emergence of strong prize-winners, and memories of “what could have been” in the final match against Hōshōryū. This tournament will be remembered as the one where a new Yokozuna announced himself clearly, even as he showed humility in defeat. Source
