Hector Herrera scored a dramatic winner in the ninth minute of stoppage time to send Mexico into the Gold Cup decider against the United States after a tense 2-1 semi-final victory over Canada in Houston. The Atletico Madrid midfielder fired in a low strike from the edge of the box after substitute Rodolfo Pizarro's cutback, clinching the win on Thursday. Mexico defender Carlos Salcedo had seen his second-half penalty saved as Canada goalkeeper Maxime Crepeau came up with some big stops. The reigning champions had taken the lead with an Orbelin Pineda penalty on the stroke of half-time, but Canada levelled from Tajon Buchanan with a low 57th-minute finish.