A total of 18 teams is taking part in the league, consisting of 16 who competed in the previous season and two promoted from the Eerste Divisie.
The teams promoted from the Eerste Divisie at the end of the previous season were champions VVV-Venlo and promotion/relegation play-off winners RKC Waalwijk.
[2][3] As of 2025, this is the last time that none of the big three Dutch teams have won the title.
Including games played on 2 May 2010; Source: Yahoo Sport, ESPN Soccernet, Soccerway, Eredivisie (official site) (in Dutch) The teams placed 6th through 9th compete in a play-off tournament for one spot in the second qualifying round of the UEFA Europa League 2010–11.
Ajax drew the highest average home attendance in the 2009-10 edition of the Eredivisie.