The Oklahoma Mahjong Club encourages competitive play through its multiple leagues, tournaments, and participation in regional and national events.
Equinox League
In Person | Ongoing | March 21 – September 23 — Among Eligible Participants
Four Seasons League | Fall ’25
Online | Ongoing | Four Seasons League will Return!
PAST: World Riichi League – USA Majors
In Person | Register by Thursday, June 26 | Tulsa, OK
Regional and National Events
Club tournaments use the World Riichi Championships ruleset.
Modifications and adjustments noted in advance of tournament.
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Oklahoma Mahjong 