Men's Senior Baseball League Men's Senior Baseball League The Men’s Senior Baseball League (MSBL)/Men’s Adult Baseball League (MABL) is a national organization in the United States, with 325 local affiliates, 3,200 teams, and 45,000 members who play organized amateur baseball in local leagues, 30 regional tournaments and six national tournaments. The Men’s Senior Baseball League (MSBL)/Men’s Adult Baseball League (MABL) is an amateur baseball league for adults 18 years of age and older was founded by Steve Sigler in 1988. Soon after, Steve established the MSBL/MABL World Series and Fall Classic which take place every October/November in Arizona and Florida, respectively, playing on almost
Baseball in the United States when St. Louis Cardinals' general manager Branch Rickey formalized the system, and teams in small towns were "growing players down on the farm like corn." As of 2018, the Minor League Baseball hierarchy is separated into the classes of AAA, AA, High-A, A, Short-Season A, Rookie-Advanced and Rookie. Most major league teams have teams in at least six of these seven levels. Major League Baseball and Minor League Baseball teams may enter into a PDC for a two- or four-year term. At the expiration of a PDC term, teams may renew their affiliation, or sign new PDCs with different clubs,