Lambda Basketball currently organizes Open Gym once a week in Orange County on an RSVP to play system due to limited availability of spots.  Our Open Gym are organized to allow players to play a maximum amount of games by having a running game clock and scoreboard.  We charge a $10 Open Gym fee and ask that players bring a reversible jersey or both a black and a white t-shirt to play in.

Players of all skill levels are welcome to attend our Open Gyms.


As of June 2021, our Orange County Open Gym takes place weekly at the MAP Sports Facility in Garden Grove.  Space for this Open Gym is limited and we currently use an RSVP system to participate in the Open Gym.  No spectators are allowed at this Open Gym.

There is plenty if public parking at the MAPS Sports Facility and the facility is requiring players to wear a mask upon entry and exit of the building.  They also require a temperature check upon entry.  

The court number we play on will be listed as "Lambda or Jason J." above the registration table.

Click here to RSVP for our Orange County Open Gym


As of March 2020, we do not have offer a Hollywood Open Gym.  We will post dates on our calendar and send out announcements once we resume Hollywood Open Gyms.


As of March 2020, we currently do not have any Downtown Los Angeles Open Gyms scheduled.  We will post dates on our calendar and send out announcements if we resume Downtown Los Angeles Open Gyms.


As of January 2020, we currently do not have any Long Beach Open Gyms scheduled.  We will post dates on our calendar and send out announcements if we resume Long Beach Open Gyms in the future.


Lambda Basketball will always have a designated Gym Monitor (Usually one of our Board Members) on-site to organize game play for the evening by managing the player sign-up sheet and verifying that all player Open Gym Fees are paid.  Players must RSVP in advance for our open gyms as space is limited.  Players who show up to the gym without an RSVP will unfortunately be turned away.  Players can RSVP for future open gyms via the Lambda Basketball website by clicking on the "Upcoming" tab drop down under "Open Gym" on the website header or clicking here to be taken to the "Upcoming" Open Gym page.


Lambda Basketball understands that economic hardships occur, but it is up to the player to bring this up with our Board of Directors prior to our Open Gym night; this can be done so via e-mail (admin@lambdabasketball.com).

We ask that all players in attendance bring a reversible jersey or both a light colored shirt and a dark colored shirt to help keep games organized.

We use a sign-up sheet to keep track of who will be playing next and players play two games in a row then sign-up to ensure that all in attendance get a fair chance to play.  The only time where this rule is not in affect during the first game where the loser of the game has to sign-up.


  • Games are played to 11 minutes or 11 points; or 9 minutes or 9 points if there are more than 15 people in attendance - by 1s & 2s

  • If there is a tie at the end of 11 minutes or 9 minutes;  a sudden death overtime is played with 1 minute on the clock with the ball going to the team that had position last or did not shoot the ball last

  • Players call their own fouls - Respect the call and do not argue fouls!

  • Have fun, meet new people and grow friendships!

Code of Conduct & Release Waiver


Have fun playing the game of basketball while making new friends and building friendships.


We keep a running game clock and scoreboard.  Score 11 points or score more points than your opponent in 11 minutes to win.


All skill levels and backgrounds are welcome and encouraged to participate.  We want you here whether your are a weekend warrior, former HS or college player, haven't played in a while or are new to the game.  Be who you are and enjoy our safe and welcoming sporting environment.