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Grand Sumo May Tournament 2028 (Natsu Basho) - Ticket Oosumo advance lottery

SumoRyogoku Kokugikan, Tokyo, JapanNihon Sumo Kyokai (Japan Sumo Association); official ticketing via Ticket Oosumo (operated with PIA Corporation)

Key facts

Ballot window: ~5 Apr 2028 to 9 Apr 2028estimated from last cycle
Results: 2028-04-11
Event dates: 2028-05-14 to 2028-05-28
Ballot type: free-entry draw
Entry cost: Free to enter. Requires free Ticket Oosumo member registration; no application fee. Winners pay face value plus issuing/system fees.
Eligibility: Anyone with a free Ticket Oosumo account (Japanese-language site; tickets issued in Japan). Overseas buyers use the official English site sumo.pia.jp/en: no lottery, first-come from the general-sale date.
Ticket prices if you win: Per current Kokugikan levels: chair JPY 2,500-9,500 per person, tamari JPY 20,000, masu boxes approx JPY 17,000-78,000.

Official site ↗Add dates to calendar

Where it stands

As of 7 Jul 2026

Not yet scheduled as of 2026-07-07. Expected: Fan Club lotteries mid-to-late March 2028, Ticket Oosumo lottery early April 2028, general sale ~2028-04-15.

How to enter

Register free at sumo.pia.jp; apply online during the window; random draw; results ~18:00 JST via MyPage/email; automatic card charge between close and results.

Your odds

No official odds published; fully random draw; weekend/final-weekend days heavily oversubscribed.

Good to know

ALL DATES ESTIMATED. Tournament dates assume the second-Sunday-of-May start (2028-05-14). Natsu pattern (2026-2027 confirmed cycles): Saturday general sale ~4 weeks before day 1 (est ~2028-04-15); Ticket Oosumo lottery Wed-Sun ~10 days earlier (est 2028-04-05 to 04-09, results ~04-11).

Quick answers

▸Is there a public ticket ballot for Grand Sumo May Tournament 2028 (Natsu Basho)?

Yes. It runs as a free-entry draw. ~5 Apr 2028 to 9 Apr 2028.

▸How much does entering cost?

Free to enter. Requires free Ticket Oosumo member registration; no application fee. Winners pay face value plus issuing/system fees.

▸Who can enter?

Anyone with a free Ticket Oosumo account (Japanese-language site; tickets issued in Japan). Overseas buyers use the official English site sumo.pia.jp/en: no lottery, first-come from the general-sale date.

Sources · last verified 7 Jul 2026 · confidence: low

Dates marked as estimated are projected from the previous cycle and will be updated the moment the organizer confirms. Always check the official site before you plan travel.