Arsenal's Carlos Vela inspired Mexico to a 5-0 demolition of the United States to lift the CONCACAF Gold Cup for a record eighth time.
After a goalless first half, the striker came off the bench at the start of the second period to transform a tight, nervy affair.
Mexico then broke the deadlock 11 minutes after re-start when captain Gerardo Torrado scored from the spot after Jay Heaps had hauled down Giovani Dos Santos.
The Confederation Cup winners started to panic as they had to hold back wave after wave of attack, and Mexico doubled their lead in the 62nd minute when Vela raced down the left flank and cut inside before slotting the ball back to Miguel Sabah.
The tournament's leading goalscorer saw his shot saved but the rebound fell to Dos Santos who lashed it home from close range.
Vela got his name on the scoresheet five minutes later when he raced onto Dos Santos' pass into the penalty area before firing across goal into the bottom right corner.
The 20-year-old turned provider once more in the 79th minute, tearing the USA defence apart yet again with a through ball to Jose Castro for a simple finish.
Things went from bad to worse for the hosts two minutes from time when Heaps was sent off for a second yellow card.
There was still time for a final goal from Mexico when Fausto Pinto found Guillermo Franco and he fired into the bottom left corner from just outside the penalty area to complete a miserable night for USA goalkeeper Troy Perkins.