Also, divisions need to be roughly equal in size to ensure that each team has an equal chance of becoming division champion. When a league introduces new teams in new markets, placing them in the division best suited to their geography may result in more teams in that division, so realignment is necessary. The 1969 baseball realignment coincided with the addition of four teams, whereas its 1994 realignment creating extra divisions in both the American League and the National League came a year after the league added the Colorado Rockies and Florida Marlins. The National Football League realigned to its current eight-division format after a series of team relocations had created geographically skewed divisions.