The format for the Senior USBC is now fixed, except for the first stage. If the number of teams is between 11 and 14, the first stage will be a 1-1/2 day Round Robin. If there are 15 or 16 teams, the first stage will be a 1-1/2 day, 90 board KO. The USA1 bracket continues with 1-1/2 day, 90 board Quarterfinal, Semifinal and Final matches. Teams that do not qualify for USA1 and teams that are eliminated in USA1 drop into the USA2 bracket, where there will be Round Robins or KO matches opposite each of the USA1 stages. The losing USA1 Finalist will drop into the USA2 Semifinal and choose their opponent from the 3 teams remaining in USA2.