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
The National Baseball Association's top 100 minor league teams (8); California League, Western Association, and Western League (4). Thirty-one teams competed at the Double-A classification level, the most of any class, followed by Class A (24); Class C (12); Class B (11); Triple-A (10); Class D (7); Class A1 and independent (2); and Class A-Advanced (1). Twenty-seven teams competed in the 1920s, the most of any decade, followed by the 1940s (16); 1930s (13); 1900s and 1950s (10); 1910s and 1980s (6); 1970s (5); 1990s (4); and 1960s (3). The National Baseball Association's top 100 minor league teams In 2001, during the centennial celebration of the National Association of