Dario Benedetto scored three goals and Club America of Mexico beat the Montreal Impact 4-2 on Wednesday night to win the CONCACAF Champions League title.
Club America won the two-game series 5-3 after tying Montreal 1-1 last week in Mexico City.
It was America's first victory in the Champions League era since 2009, but the Mexico City side won the previous version five times. It will take play in the Club World Cup in Japan in December.
Oribe Peralta also scored for the Mexican team.
Andres Romero and substitute Jack McInerney scored for Montreal, the first Canadian team to reach the final after dramatic wins in the quarterfinals over Mexico's Pachuca and Costa Rica's Alajuelense.
A capacity crowd of 61,004 had Olympic Stadium vibrating even before the kickoff as the Impact fans sang "Allez Montreal" and drowned out a sizable contingent of America supporters.
Club America scored four times in the second half, though, to spoil the party for Montreal. The Club tweeted a congratulatory message to its fans.
Buenas noches ¡A descansar con la gran satisfacción de ser Campeones una vez más! pic.twitter.com/g2sDbnl3IV
- Club América (@CF_America) April 30, 2015
Montreal went into the match without suspended goalkeeper Evan Bush. German Kristian Nicht, acquired two days earlier from Indy Eleven of the NASL, could not bail out his overwhelmed squad.
The Impact got the early goal they wanted when Ignacio Piatti dribbled through two defenders on the right side and fed fellow Argentine Romero, who took a few steps to the left and then put a low shot across his body that beat goalkeeper Moises Munoz in the eighth minute.
America missed a chance to tie it in the 12th when Darwin Quintero's free kick was headed from the left side to a wide open Benedetto, only to see his close range shot hit the woodwork.
Piatti was stopped from close range when he went in alone in the 24th.
America stormed out after the intermission and tied it in the 50th off a turnover. Osvaldo Martinez chipped the ball over a stagnant Montreal defense and Benedetto scored on an impressive volley that Nicht got his hands on but couldn't hold on to.
Quintero headed a ball that Peralta nodded home from close range in the 64th. Only two minutes later, Bendetto charged up the middle and volleyed home a Miguel Samudio feed.
Then Benedetto scored on an open shot from near the penalty spot in the 81st when the Montreal defense overran the ball.
Piatti slipped a pass to the onrushing McInerney for a goal that brought the crowd back to life in the 89th.