Kensho — sponsoring the white envelopes

What is kensho?

Kensho (懸賞) are the cash prizes offered by sponsors for specific bouts during a tournament. Before each sponsored bout, a yobidashi carries a banner bearing the sponsor's name around the ring — the number of banners indicates how many sponsors have attached prizes to that match. After the bout, the winning wrestler receives the kensho envelopes from the gyoji, traditionally accepting them with a series of hand movements representing the three Shinto virtues.

Kensho are a significant source of income for top wrestlers. A heavily sponsored Yokozuna bout might have thirty or forty envelopes — each containing a fixed sum — making the prize money from a single match substantial. For less prominent bouts, kensho may be absent entirely or sponsored by just one or two parties.

What the sponsor receives

In exchange for sponsoring kensho, the sponsor receives their name carried visibly around the ring on the yobidashi's banner, read aloud by the announcer, and displayed on the arena's scoreboard. During broadcast bouts — which at the Makuuchi level means NHK television coverage — this exposure reaches a national audience. For high-profile bouts with significant kensho, the exposure is meaningful.

Individual kensho sponsorship

Individual fans can sponsor kensho for specific bouts during a tournament. The process requires advance arrangement with the JSA — kensho cannot be added spontaneously on the day of a bout. Sponsors select which bout they wish to sponsor, subject to availability, and the JSA coordinates the logistics of the banner and envelope preparation.

Individual kensho sponsorship is an established way for devoted fans to visibly support their preferred wrestler at a specific tournament moment. It is most commonly done for bouts involving the fan's preferred rikishi, and particularly for matches with high stakes — day fifteen bouts, playoffs, or encounters with top opponents.

How to arrange individual kensho

• Contact the JSA

  Kensho sponsorship is arranged through the Japan Sumo Association. Contact the JSA's business office directly — contact details are available on the official JSA website (sumo.or.jp). Inquiries in Japanese are preferred but English inquiries are handled.

• Specify the tournament and bout

  Indicate which basho you wish to sponsor kensho for, and if possible which specific bout or wrestler. The JSA will confirm availability and current pricing.

• Complete the arrangement

  Payment and banner text (your name or message, within character limits) are confirmed in advance of the tournament. The JSA handles all logistics from this point.

• Watch for your banner

  During the bout, your sponsor banner will be carried around the ring by the yobidashi before the match begins. If attending in person you will see it live; if watching on NHK the banner is typically visible during broadcast coverage.

Corporate kensho sponsorship

Corporate kensho sponsorship is a well-established marketing channel in Japan. Companies sponsor envelopes to associate their brand with sumo's prestige, reaching the substantial NHK broadcast audience during major bouts. The banner carries the company name and is repeated across multiple bouts if multiple envelopes are sponsored.

For international companies with Japanese market interests, sumo kensho sponsorship offers a culturally resonant way to demonstrate commitment to Japanese consumers. The JSA has experience working with international corporate sponsors and the process — while requiring Japanese-language negotiation or intermediary support — is well-established.

Corporate contact

Corporate sponsorship inquiries should be directed to the JSA's business and sponsorship department. The JSA website provides contact information, and for international companies, engaging a Japan-based PR or sports marketing agency with sumo experience can streamline the process significantly. Sponsorship packages, pricing tiers, and the specific bouts available for corporate kensho are discussed directly with the JSA.