The Tri-Senates of Southern California was founded in 2006 with the goal and purpose of creating match game competition originally between the three bowling senates of the National Bowling Association located in the Southern California area: Los Angeles, San Diego and the Inland Empire. Since then, the Antelope Valley (Palmdale) Senate has been added. These four bowling senates rotate the hosting of these match game tournament four times per year. These events have grown to become very popular events show casing the best that TNBA has to offer in the Southern California area. New bowlers are becoming TNBA members as well as old members are renewing their membership status to participate in the ever popular tournaments and are often sold out several months in advance.