Unit 500 is part of the ACBL (the American Contract Bridge League) and represents Southern Alameda County. Unit 500 is also within District 21 (Northern California, U.S.A) of the ACBL. District 21 is part of the Western Conference (Districts 17, 21 and 22), the publisher of the monthly Forum newletter. Southern Alameda County has ACBL duplicate bridge club games, a South County Sectional in August, local Unit tournaments and many special events. There are nearby Sectional and Regional tournaments too (click on "Tournaments"). There are local duplicate games ("Bridge Clubs" menu) for players of all abilities from novice to expert, and bridge lessons "Learn" menu).