The United States, who are fresh from their Confederations Cup success, got their Gold Cup tournament off to a successful start with a 4-0 blanking of lowly Grenada.
The defending champion Americans got goals from Freddy Adu, Stuart Holden, Robbie Rogers and Charlie Davies.
The US, which was permitted to carry a 30-man roster compared to just 23 for Grenada, outshot world No. 88 Grenada 25-3.
They will also face Honduras on Wednesday and Haiti on July 11 in Washington, D.C. and Foxborough, Massachusetts.
The American are trying to become the second team to win three-straight Gold Cups. The last team to do it was Mexico which won three straight in the 1990s.
The 12th ranked US has won three of the last four events and four times since the tournament began in 1991.
