two best-of-five rounds: semi-finals and finals. Most Class A, Class A Short Season, and Rookie League playoffs consisted of two best-of-three rounds. The champions of the two Triple-A leagues, the International League and Pacific Coast League, met in the Triple-A National Championship Game, a single game to determine an overall champion of the classification. In the 2021 season, the first after the reorganization, no MiLB league had more than two teams involved in playoffs, with some leagues not holding a postseason at all. The Rookie leagues, better known as the Complex Leagues (from those leagues being hosted at major-league spring training facilities), did not hold playoffs; the regular-season winners were crowned champions. In all Low-A, High-A, and Double-A leagues (three at each level), the top two teams at the end of the regular season advanced to a best-of-five championship series. In both Triple-A leagues, the top team at the end of the 120-game regular season was crowned champion. After the regular season, all 30 teams at this level played a 10-game "Final Stretch". Taiwan Taiwan's playoff is different to many such competitions, due to the league's split-season format. The winners of the first half-season and the winners of the second half-season are eligible to play in the playoffs, but if the best overall team have not won either half season then they qualify into a wild card series against the weaker half-season winner, with the winner of this advancing into the Taiwan Series to face the other half-season winner. If the first and second half winners are different, but one of them is also the best overall team, then both teams progress directly to the Taiwan Series. Finally, if one team wins both halves of the season then a playoff will take place between the second and third best teams for the right to play them in the Final Series; in this case the team winning both halves of the season will begin the Taiwan Series with an automatic one game advantage. Basketball National Basketball Association The present organization known as the National Basketball Association, then called the BAA (Basketball Association of America), had its inaugural season in 1946–47. Teams had always have different strength of schedule from each other; currently, a team plays a team outside its conference twice, a team within its conference but outside its division three or four times, and a team from its own division