Match ends, Mexico 1, USA 0.
Mexico extended their record number of Concacaf Gold Cup wins as Jonathan dos Santos' strike gave them a narrow victory over the United States.
LA Galaxy midfielder Dos Santos latched on to a smart Raul Jimenez back heel to fire in off the bar in front of 62,493 fans at Chicago's Soldier Field.
Christian Pulisic had a good early chance but US boss Gregg Berhalter said Mexico were the "better team".
"I think we lacked some calmness and composure," said Berhalter.
"When you talk about a step the team needs to take, we're close but we weren't there tonight."
The Gold Cup, referred to as the Concacaf Championship before 1991, crowns the continental champions of North America, Central America and the Caribbean.
Mexico now have 11 wins in the tournament's history, five more than the US, who claimed the biennial tournament in 2017.
"This was what we came here for," said Mexico's Andres Guardado.
"We did it and in an unforgettable setting. We're very happy. The whole team was spectacular."
Moments after new Chelsea signing Pulisic was denied in a frenetic opening, US striker Jozy Altidore fired wide when one-on-one with the goalkeeper.
Guardado headed a Jordan Morris effort off the line after half-time before Dos Santos produced the game's decisive moment with a clinical left-foot finish.
The goal delivered Mexico their eighth success since the tournament was re-branded in 1991.
Wolves striker Jimenez finished as the tournament's joint-second leading scorer on five goals alongside Canada striker Lucas Cavallini - with the 28-year-old's team-mate Jonathan David on six.
- 6J dos Santos
- 18GuardadoSubstituted forReyesat 89'minutes
- 22AntunaSubstituted forAlvaradoat 86'minutes
- 20PizarroSubstituted forRodríguezat 81'minutes
- 13ReamSubstituted forLovitzat 83'minutes
- 11MorrisSubstituted forRoldanat 61'minutes
- 17AltidoreSubstituted forZardesat 64'minutes
- Mario Escobar
- Shots on Target
Second Half ends, Mexico 1, USA 0.
Attempt missed. Diego Reyes (Mexico) header from the centre of the box misses to the right. Assisted by Jonathan dos Santos with a cross following a corner.
Corner, Mexico. Conceded by Aaron Long.
Offside, Mexico. Guillermo Ochoa tries a through ball, but Raúl Jiménez is caught offside.
Raúl Jiménez (Mexico) wins a free kick on the right wing.
Foul by Daniel Lovitz (USA).
Substitution, Mexico. Diego Reyes replaces Andrés Guardado.
Attempt blocked. Cristian Roldan (USA) right footed shot from the right side of the box is blocked. Assisted by Aaron Long.
Corner, USA. Conceded by Carlos Salcedo.
Substitution, Mexico. Roberto Alvarado replaces Uriel Antuna.
Attempt missed. Matt Miazga (USA) header from the centre of the box is close, but misses to the right. Assisted by Christian Pulisic following a set piece situation.
Foul by Jonathan dos Santos (Mexico).
Christian Pulisic (USA) wins a free kick in the attacking half.
Offside, USA. Weston McKennie tries a through ball, but Gyasi Zardes is caught offside.
Foul by Andrés Guardado (Mexico).
Cristian Roldan (USA) wins a free kick in the defensive half.
Substitution, USA. Daniel Lovitz replaces Tim Ream.
Attempt missed. Raúl Jiménez (Mexico) header from the centre of the box misses to the right. Assisted by Jonathan dos Santos with a cross following a set piece situation.
Raúl Jiménez (Mexico) wins a free kick in the attacking half.