how many divisions are there in minor league baseball
Minor League Baseball The current minor league classification system divides leagues into one of five classes, those being Triple-A (AAA), Double-A (AA), Class A (Single-A or A), Class A Short Season, and Rookie. Furthermore, Class A is further subdivided into Class A and Class A-Advanced (often called Low-A and High-A, respectively), and Rookie is further subdivided into Rookie Advanced, Complex-based Rookie and international summer baseball. Under the rules governing the affiliated minor leagues (specifically Major League Baseball Rule 51), Class A Short Season is a separate classification from the other leagues bearing the "Class A" name, despite the similarity in name.
Major League Baseball wild card In Major League Baseball (MLB), the wild card teams are the two teams in each of the two leagues (American and National) that have qualified for the postseason despite failing to win their division. Both teams in each league possess the two best winning percentages in their respective league after the three division winners. The wild card was first instituted in MLB in 1994, with one wild-card team per league advancing to the Division Series in the postseason to face a division winner. In 2012, the system was modified to add a second wild-card team per league and put each league's wild-card teams against each other in a play-in game—the MLB Wild Card Game—the winner of which would then advance to the Division Series and play the team with the best record. This system ensures that the team with the second-best record in each league, after the three division winners and the team with the first-best record in the league that is a non-division winner, will also get a postseason berth, even if it isn't a division champion.