In DC, we have multiple inter-club events. The DC Metro area has a league that, like the Northern California League, consists of divisions of 4 teams. Like in NorCal, each club plays a home & away match against the other 3 teams in their division. Winners of the divisions play off in a single-elimination tournament for the league championship. The difference is in the play. First, there are no strokes. (People call it "A" Team.) Second, while the matches consist of 12 players per side (playing 6 4-balls), the only game is the 4-ball, and each match is worth 3 points--1 point for the front, 1 for the back, and one for the 18. (There's also a Maryland-only version of "A" Team.)
We also have a smaller group of six clubs that play what's called "B" Team. As with "A" Team, each match consists of 12 players (playing 6 4-balls), the only game is the 4-ball, and each match is worth 3 points-- again, 1 point for the front, 1 for the back, and one for the 18. The difference here is that each two-man team has to have a combined index of at least 14.0, and neither player can have an index lower than 5.0 -- but once the teams are set, there are no strokes. The overall format is a round robin, with each team playing each other team (home & away) once, but the season finishes with a day where all six teams play against one another at the same venue. The clubs in B Team for the last several years have been Bethesda, Chevy Chase, Columbia, Congressional, Lakewood, and Woodmont.