Competitive League
Fast-paced, scored, and sold out for a reason. Our flagship competitive league meets every Monday at Nova.
The Details
Mahjong Monday is OCSM's competitive league, designed for intermediate to advanced players who can hold their own at the table and want to test their game against similar players. You should be able to play at a brisk, autonomous pace (think ~25 minutes per game) without needing prompts or regular reminders on rules.
We play American mahjong by NMJL rules. No blanks. No exceptions.
Leagues run for five weeks each, five times a year: Winter, Spring, Early Summer, Late Summer, and Fall. Registration opens about one month before each season begins and is available exclusively online. Spots go fast โ Early Summer 2026 sold out in under 15 minutes.
Is Monday Right for You?
Not quite there yet? Tile Tuesday might be a better fit while you sharpen your game.
Between Seasons
Drop-in games between league sessions. A great way to stay sharp and meet new players. Watch our Instagram for dates.
Structured play with a little more guidance. A good bridge for players leveling up toward Monday competition.
Tournaments, theme nights, and more. Follow us on Instagram or check the Events page for the latest.
Registration
Registration opens approximately one month before each season. Sign up is online only. Check our Instagram @oakcliffmahj for announcements โ spots go in minutes.