Southeast Michigan Riichi is proud to announce the second Great Lakes Riichi Open, an ARA-sanctioned tournament for the riichi community of the midwest (and beyond). Come join us for a fun weekend of mahjong!
Event Information
Dates: October 25-26, 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:
- Head Judge:
- Tournament Organizer:
- Event Staff:
Registration
Entry fee: $50 (via Venmo, with alternate options available upon request)
Attendance cap: 64 players
Instructions: Please use this Google Form (TBA) to register! 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)
- Kazoe Yakuman (Mod 4.4)
- Lower Penalties (Mod 6.3)
Time alotted 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 (Oct 25) | Day 2 (Oct 26) |
|---|---|
| 8:30 am - Check in opens | 8:30 am - Check in opens |
| 9:15 am - Announcements | 9:15 am - Announcements |
| 9:30 am - Hanchan 1 | 9:30 am - Hanchan 6 |
| 11:00 am - Hanchan 2 | 11:00 am - Hanchan 7 |
| 12:30 pm - Lunch | 12:30 pm - Lunch |
| 2:00 pm - Hanchan 3 | 2:00 pm - Finals 1 / Hanchan 8 |
| 3:30 pm - Hanchan 4 | 3:30 pm - Finals 2 / Hanchan 9 |
| 5:00 pm - Hanchan 5 | 5:00 pm - Awards |
| Until 10pm - Free play | Until 10pm - Free play |
Participant List
| No. | Name | Club Affiliation | Confirmed | | :—–: | —– | —– | :—–: