Since the tournament expanded to 64 teams in 1985, the 13th-seeded team has won 10 of 48 games.

The field was expanded to 20 teams, and some now include international students from Africa.

The league expanded to five teams in 1991 and to six last year.

The 1940-41 season saw only one change in this set up, the groups were expanded to eight teams.

In the 2009-10 season, the league was expanded to 16 teams.

The 1971 season expanded to 16 teams from the original 14.

For the 1971 season, the championship was expanded to 16 teams.

This was the first season in which the competition had been expanded to four teams.

Starting in the 2015 season, the league is expected to expand to 16 teams.

For the 1926-27 season, the league was expanded to ten teams.