Along with the Von Zedtwitz Life Master Pairs at the summer NABC and the Norman Kay Platinum Pairs at the spring NABC, the events provide one marquee pairs championship at each of the three NABCs. Each is open to all players whose past performances qualify them, without regard to age, gender, nationality, or ACBL membership. In addition, the North American Pairs, contested in the spring, is for ACBL members who have qualified in one of its 25 Districts, some of which require qualification in local Units.