It was announced during the tournament on June 9, 2011, that five Mexican players, Antônio Naelson, Christian Bermúdez, Édgar Dueñas, Francisco Javier Rodríguez and Guillermo Ochoa, all tested positive for clenbuterol prior to the Gold Cup and have therefore been withdrawn from the squad.[3] Mexican officials said they believed the positive tests were caused by eating meat tainted with the drug.[4] CONCACAF General Secretary Chuck Blazer said a meeting of the confederation's national teams committee, which also serves as the organizing committee of the Gold Cup, was to be convened on June 10 to consider the situation, including possibly allowing Mexico to replace the five players. However, the meeting was postponed to allow for more information to be gathered.[5]
Draw
The teams learned their path to the regional title when CONCACAF announced the groups and match schedule for the 2011 Gold Cup on concacaf.com Tuesday, March 8 at 12 pm ET. The confederation championship will run from June 5 to 25 in 13 different stadiums across the United States, culminating at the Rose Bowl in Pasadena for the championship final.[6]
Group stage
For the first round, or group stage, the twelve teams were divided into three groups of four teams. Each group was a round-robin of six games, where each team played one match against each of the other teams in the same group. Teams were awarded three points for a win, one point for a draw and none for a defeat. The teams finishing first and second, as well as the two best-placed third teams in each group qualified for the quarter-finals.
If two or more teams are equal on points (including ties among third place teams), the manner in which teams will advance to the next round will be resolved as follows and in the order indicated:[7]
Greater number of points in matches between the tied teams.
Greater goal difference in matches between the tied teams (if more than two teams finish equal on points).
Greater number of goals scored in matches among the tied teams (if more than two teams finish equal on points).
Greater goal difference in all group matches.
Greater number of goals scored in all group matches.
Drawing of lots.
All Times are U.S. Eastern Daylight Time (UTC−4) (Local Times in parentheses)
they lose to Mexico and El Salvador defeat Cuba with a combined margin of 9 or less (10 if El Salvador do not outscore Costa Rica by at least 5 goals)
El Salvador advance to the quarterfinals if they defeat Cuba and Mexico defeat Costa Rica with a combined margin of 11 or more (10 if El Salvador outscore Costa Rica by at least 6 goals)
The loser of the El Salvador - Cuba match will be eliminated; if they draw, both teams will be eliminated and the 3rd place teams from Groups B and C will both advance to the quarterfinals
(in Group A on 12 June) El Salvador do not defeat Cuba or
they lose to Jamaica and Guatemala defeat Grenada with a combined margin of 7 or less (8 if Guatemala do not outscore Honduras by at least 7 goals)
Guatemala advance to the quarterfinals if they defeat Grenada and Jamaica defeat Honduras with a combined margin of 9 or more (8 if Guatemala outscore Honduras by at least 8 goals)
Grenada will be eliminated if they do not defeat Guatemala
Guatemala will be eliminated if they lose to Grenada
^Cherry, Gene (Jul 21, 2010). "Rose Bowl to host 2011 CONCACAF Gold Cup final". Reuters.com. Reuters. Retrieved August 12, 2010. Southern California's Rose Bowl will host CONCACAF's 2011 Gold Cup final next June 25, the confederation announced on Wednesday.