the grand national teams is a team knockout event. the event is broken into four flights (championship, a, b, c). the event is restricted to those who have qualified in their local acbl district. no player on a flight a team can have more than 6,000 masterpoints. no player on a flight b team can have more than 2,500 masterpoints. no player on a flight c team can have more than 500 masterpoints, or be a life master.