Chile: Mexico coach Miguel Herrera watched in frustration and anger as his side failed to break down minnows Bolivia in a Copa America encounter Friday that ended in a goalless draw. Herrera was lucky his side did not concede a killer goal in game that left hosts Chile in charge of Group A after their 2-0 win over Ecuador on the opening day of the South American championship. He chided his side -- weakened by the absence of star players such as Javier 'Chicharito' Hernandez, Carlos Vela and Giovani dos Santos -- from the touchline as they failed to break down the world 89th ranked Bolivians.

But Herrera erupted at Paraguayan referee Enrique Caceres for not awarding a penalty when Javier Aquino, Mexico's most effective player, appeared to be brought down in the 79th minute. Herrera brought a weakened squad to the Copa America as he is saving his main players for the Gold Cup in the United States next month. But he still insists that Mexico, 29th in the FIFA rankings, are in Chile to win games.