World Baseball Softball Confederation
The Asia Series was an international club baseball competition, contested by the champions of all four of the professional leagues that are associated with the World Baseball Softball Confederation (WBSC) — Australian Baseball League (ABL), Chinese Professional Baseball League (CPBL), Korea Baseball Organization League (KBO League), and Nippon Professional Baseball (NPB) — along with the CEB European Champion Cup holder and the host city, to bring the number of teams up to six.