24 teams have participated in the CONCACAF Champions League 2008–09 from the North American, the Caribbean, and Central American zones. Below is the qualification scheme for the 2008-09 competition:[2]
* - The New England Revolution were both the 2007 U.S. Open Cup champions and 2007 MLS Cup runner-up, Chivas USA has claimed the remaining U.S. spot as the team with the most points in the 2007 MLS season not already qualified.
† - Deportivo Saprissa won both the 2007-08 Invierno and Verano championships, so LD Alajuelense has claimed CRC2 as the team with the most points in the 2007-08 Verano tournament.
¥ - L.A. Firpo won both the 2007 Apertura and the 2008 Clausura championships, so A.D. Isidro Metapán has claimed SAL2 as the team with the most points in the 2008 Clausura tournament.
Format
There was a two-leg Preliminary Round for 16 clubs, with the 8 winners advancing to the Group Stage. The other 8 teams in the Group Stage were seeded directly into the Group Stage. The clubs involved in the Group Stage were placed into four groups of four with each team playing the others in its group in both home and away matches. The top two teams from each group will advance to the Knockout Rounds, which will consist of two-legged ties. The Final, to be held in late April 2009, will also be two-legged. Also, unlike the previously contested CONCACAF Champions' Cup, the away goals rule will be used in the CONCACAF Champions League.[3]
The draw for the Preliminary Round was held on 11 June 2008 in New York City. The first legs of the Round were played from 26 August to 28 August 2008, while the second legs were played from 2 September to 4 September 2008.[4]
The effects of Hurricane Gustav led to the cancellation of the first leg of the Harbour View - UNAM Pumas tie, and as a result the tie was contested as a single match.[6]
The draw for the Knockout Rounds will be held in November 2008. Each of the Knockout Rounds will be played over two legs.
Quarterfinals
The first legs of the Quarterfinals will be played from 24 February to 26 February 2009, while the second legs will be played from 3 March to 5 March 2009.
Semifinals
The first legs of the Semifinals will be played from 17 March to 19 March 2009, while the second legs will be played from 7 April to 9 April 2009.
Final
The first leg of the Final will be played from 21 April to 23 April 2009, while the second leg will be played from 28 April to 30 April 2009.