Southeast Michigan Riichi is proud to announce the third Great Lakes Riichi Open, a tournament for the riichi community of the midwest (and beyond). Come join us for a fun weekend of mahjong! Currently awaiting ARA Ceritification.
Event Information
Dates: November 14-15, 2025
Venue Location: R U Game, 1345 E Michigan Ave, Saline, MI (near Ann Arbor). If you plan to fly in, please note that the location is approximately 25 miles from the DTW airport.
Hosts:
- Judges: Steve Augustin (Head), Hannah Zhou
- Tournament Organizer: Dylan Boyd
- Event Staff: Zach W, Vikram P, Sky J
Registration
Entry fee: $50 (via Venmo, with alternate options available upon request)
Attendance cap: 64 players
Instructions: Please use this Google Form to Register! The form opens Thursday, September 10th at 9pm EST / 6pm PST. The Venmo tag for entry fee payment is included in the form. Waitlist information will be added here if the need arises.
Discord server: Join the event server for links to pairings and standings and to coordinate with fellow players!
Rules
Ruleset: The GLRO will use the 2025 WRC rules with the following optional modifications:
- Red Fives (Mod 2.1)
- 30/10 Uma (Mod 4.1)
- Modified penalties as follows:
- Shohai/Tahai dead hand with a -10 sho-chombo
- Kuikae dead hand with a -10 sho-chombo
Time allotted per game: 75 min + 0
Food and Lodging
Food: Water, coffee, and snacks will be provided. This event will not be catered, but there are a number of lunch options nearby the venue.
Lodging: There are several affordable hotel options around the venue and in Ann Arbor. We recommend comparing rates before making a decision – noting that rideshare in this area isn’t too expensive.
Prizes
Cash prize: If we hit the 64 entrant cap, we plan to offer $500 in cash prizes, split 200/150/100/50 for 1st through 4th place. If we end up under the cap, this amount will be adjusted accordingly.
Awards: Trophies for 1st through 4th place, and conditionally (50+ players) medals for 5th through 8th place. Additional swag is planned.
Tournament Format and Schedule
Format: 7 hanchan scramble followed by a top 4 cut. Top 4 will play a two hanchan final bracket, while all other players continue with two additional games of scramble to determine final placements of 5th and lower.
Schedule
| Day 1 (Nov 14) | Day 2 (Nov 15) |
|---|---|
| 8:30 am - Check in opens | 8:30 am - Check in opens |
| 9:00 am - Announcements | 9:00 am - Announcements |
| 9:30 am - Hanchan 1 | 9:30 am - Hanchan 6 |
| 11:15 am - Hanchan 2 | 11:15 am - Hanchan 7 |
| 12:45 pm - Lunch | 12:45 pm - Lunch |
| 2:00 pm - Hanchan 3 | 2:00 pm - Finals 1 / Hanchan 8 |
| 3:45 pm - Hanchan 4 | 3:45 pm - Finals 2 / Hanchan 9 |
| 5:30 pm - Hanchan 5 | 5:30 pm - Awards |
| Until 10pm - Free play | Until 10pm - Free play |
Participant List
List will be periodically updated after registration opens