During 75 seasons of baseball (1946-2020), 71 teams in 21 minor leagues represented 35 Canadian cities, playing either under the aegis of the National Association of Professional Baseball Leagues (called Minor League Baseball since 1999) or independently. Sixteen teams operated for less than a year, including the eight teams of the Canadian Baseball League of 2003. Another 14 lasted three seasons or less. Seven have played continuously for 20...