24 teams from the 40 CONCACAF member countries qualify for the competition:
12 teams from the 7 UNCAF countries (2 teams each from El Salvador, Costa Rica, Honduras, Guatemala and Panama; and 1 team each from Nicaragua and Belize);
9 teams from the 3 NAFU countries (4 teams each from the United States and Mexico and 1 team from Canada);
3 teams from the 30 CFU countries (3 teams from the CFU Club Championship).
Belize does not enter a team, since the country lacks an adequate stadium. As a result, El Salvador gets a 3rd team in the competition.
24 teams are drawn into 8 groups of 3 teams.
Teams are seeded into 3 pots of 8 teams each, based on their country and ranking from their own championship as follows:
pot A: 2 teams each from the United States and Mexico; and 1 team each from Costa Rica, Honduras, Guatemala and Panama;
pot B: 2 teams each from the United States and Mexico; and 1 team each from Canada, El Salvador, Costa Rica and Honduras;
pot C: the 3 CFU representatives; 2 teams from El Salvador and 1 team each from Guatemala, Panama, Nicaragua.
Each of the groups consists of one team from each of the three pots.
Teams from the same country cannot be drawn into the same group (does not apply for the additional team from El Salvador that replaces the Belize representative).
Teams from the United States and Mexico cannot be drawn into the same group.
Each team plays the others from its own group twice - home and away - for a total of 4 games each, over 6 game weeks.
3 points for a win, 1 point for a draw, 0 points for a loss.
1. points won; 2. points in head-to-head matches; 3. goal difference in hth matches; 4. away goals in hth matches; 5. total goal difference; 6. total goals scored; 7. total away goals scored; 8. draw.
<b>Qualification for the Knockout stage:</b>
1 place of each group: qualify for the Knockout stage
8 teams from the Group stage contest the winner in a knockout format.
Teams are ranked 1st to 8th based on their Group stage record.
8 teams are paired as follows:
1st ranked vs 8th ranked (match 1);
2nd ranked vs 7th ranked (match 2);
3rd ranked vs 6th ranked (match 3);
4th ranked vs 5th ranked (match 4);
Winners are decided over two legs, with the higher ranked teams hosting the second legs.
4 teams are paired as follows:
winner match 1 vs winner match 4 (match A);
winner match 2 vs winner match 3 (match B).
Winners are decided over two legs, with the winners of matches 1 and 2 hosting the second legs.
The two Semi-finals winners meet each other with the winner becoming 2012/2013 CONCACAF Champions League winner.
Winner is decided over two legs, with the winner of match A hosting the second leg.
<b>Tie-breakers for the knockout matches over two legs:</b>
1. aggregate score from the two legs, 2.* away goals, 3. extra time, 4. penalties.
* - the away goals rule does not apply during extra time.
<b>Qualification for FIFA competitions:</b>
winner: 2013 FIFA Club World Cup</p>
|33||A. Weber (GK)|
|Coach: S. Schmid|
|90' +4||It's full time and Seattle Sounders start their CONCACAF Champions League campaign with a solid 3-1 victory over Caledonia AIA.|
|90' +3||Johansson gets to participate for the remaining minute or so.|
|90' +2||A. Johansson enters the game and replaces F. Montero.|
|90' +1||The referee will have play continue for an additional three minutes.|
|89'||Caesar gets the ball in Seattle's box but the angle is impossible and his effort forms no danger to goalkeeper Weber.|
|87'||Caledonia seem to lack the energy to truly threaten Seattle's two-goal lead.|
|84'||Both of tonight's teams will next face Marathón of Honduras, the third and final team in this group. Only group winners advance to the quarter finals.|
|82'||S. Holder enters the game and replaces J. Gay.|
|Caledonia manager Castillo makes his third and final change of the night.|
|79'||Cato creates some danger near Caledonia's area but his attempt on goal is blocked by a defender.|
|77'||Caledonia continue to look for a way through the opposing defense but Seattle seem to be in control and are happy to attack on the counter.|
|75'||L. González enters the game and replaces A. Caskey.|
|Seattle's Gonzalez comes on for the remaining 15 minutes plus added time.|
|72'||Abu Bakr takes a free kick from far out but completely misses the target once again. A wasted opportunity.|
|70'||Caledonia's Caesar rushes through the defense but his following shot on goal is blocked by one of his own teammates.|
|69'||Seattle once again seem in control as a home goal seems more likely to happen than a Caledonia come-back.|
|67'||Seattle's Ochoa almost gets his second of the night but Samuel gets in the way to avoid the 4-1.|
|65'||Seattle still have two substitutions left while Caledonia have one change left to make.|
|62'||Caledonia have about 30 more minutes to turn things around. Play seems balanced at the moment.|
|59'||Colombian Hurtado has a crack on goal but instead it rolls just wide of the left post.|
|58'||Caledonia manager Castillo makes a double substitution in an attempt to create more danger in front of Seattle's goal.|
|57'||T. Caesar enters the game and replaces T. Bobb.|
|C. Stewart enters the game and replaces C. Smith.|
|56'||Montero goes down in the penalty area without an opponent's touch and is booked for simulation.|
|55'||F. Montero gets yellow.|
|54'||Smith tries his luck with a shot from outside the area but Weber collects comfortably.|
|53'||Seattle immediately try to regain control in order to avoid surprises tonight.|
|50'||Penalty goal scored by K. Joseph for Caledonia AIA!|
|Penalty to Caledonia! Rose commits a foul in the area and Joseph converts the opportunity to make it 3-1.|
|49'||The first corner kick of the second half goes Caledonia's way, but the delivery is poor and leads to no danger.|
|47'||Seattle manager Schmid made his first change of the night at half time as Carrasco comes on for Alonso.|
|46'||S. Carrasco enters the game and replaces O. Alonso.|
|The second half has begun at CenturyLink field.|
|45' +2||It's half time and Seattle have a very comfortable 3-0 lead.|
|45' +1||There will be one additional minute left to play.|
|43'||A. Rose has scored a goal for Seattle Sounders!|
|Rose makes it 3-0! Montero shoots on goal from close range but is denied by Samuel, only for Rose to rush in and power it home for a three-goal advantage.|
|41'||Caledonia AIA earned themselves a spot in this year's Champions League by winning the 2012 Caribbean Club Championship.|
|39'||K. Edwards gets yellow.|
|Edwards fouls Alonso and receives the first yellow card of the night.|
|38'||Caledonia get a free kick at about 30 yards from the goal but Abu Bakr's effort goes well high of the target.|
|36'||Seattle qualified for this year's Champions League having earned most points in 2011's MLS season behind the LA Galaxy and having won the U.S. Open Cup.|
|34'||Seattle are clearly in control, passing the ball around in midfield.|
|31'||Alonso almost makes it 3-0 right after Seattle's second goal but his strike from distance is knocked away by Samuel.|
|30'||F. Montero has scored a goal for Seattle Sounders! Assist by A. Rose.|
|Goal Seattle! Rose finds Montero in the penalty area and the latter makes no mistake to make it 2-0 from close range. A comfortable lead now for the MLS side.|
|28'||The set-piece leads to no danger as the defense comfortably clears.|
|27'||Seattle get a free kick on the right wing and it's swung in for Rose to try a header but a defender gets there first with a corner kick as result.|
|24'||A Seattle free kick is cleared by the defense and Caledonia launch a counter-attack. Joseph finds a way into the area but his following shot is well saved by Weber.|
|22'||The goal came after a phase in which Seattle had taken the initiative. Caladonia now struggle to keep up.|
|19'||S. Ochoa has scored a goal for Seattle Sounders! Assist by A. Rose.|
|Goal Seattle! A low pass comes in from the left wing, Ochoa controls and powers the ball past Caledonia's goalkeeper for a 1-0 lead.|
|17'||Montero provides a cross from the right but fails to find one of his Seattle teammates and it goes out for a Caledonia throw-in.|
|14'||The second corner kick get cleared at the expense of a third. This time, a header from Parke sails just over the crossbar.|
|13'||A Seattle Sounders corner kick is headed wide of the near post by a Caledonia defender and the hosts get another corner kick.|
|12'||Caledonia AIA are one of two teams from Trinidad & Tobago to feature in this tournament. W Connection were held to a 2-2 draw by Xelajú earlier tonight.|
|11'||Seattle are the third MLS side to begin their Champions League campaign this week. Real Salt Lake lost 1-0 at Herediano and Toronto beat Águila 5-1.|
|8'||A free kick is swung into the Seattle box but goalkeeper Weber collects. Caledonia are carefully putting pressure on the home defense.|
|6'||Caledonia get the first corner of the night but it's easily cleared by Seattle's Evans.|
|4'||Seattle dominate in this opening phase as the hosts are looking to score an early goal.|
|2'||Seattle reached the quarter finals of the 2011-12 CONCACAF Champions League but were then eliminated by Mexico's Santos Laguna.|
|1'||The first half in Seattle gets under way.|
|Welcome to our live coverage of the CONCACAF Champions League group phase match between Seattle Sounders of the United States and Caledonia AIA of Trinidad & Tobago. The venue for this match is Seattle's CenturyLink Field and the referee for the encounter is Stanley Lancaster of Guyana.|