1920's+-+1960's

1937: Lacing was removed from Spalding basketballs 1947: Zone defenses were banned in the National Basketball Association 1947-1948: The size of teams was cut down from 12 people to 10 people 1950's: The idea of the 24 second shot clock was proposed by Danny Biasonne 1951: The width of the lane was enlarged from 6 ft to 12 ft