With his side 2-0 up after 37 minutes, Messi chased a ball into the box and as it ran out of play appeared to nudge former Cardiff midfielder Medel, who reacted with anger.
The pair squared up, with Messi raising his hands as Medel confronted him, and almost instantly referee Mario Diaz de Vivar brandished a red card at both players.
He did not take part in the medal presentations with the rest of the squad, and told reporters of his frustrations following the ceremony.
Medel appears to move his face towards Messi as he confronts the Argentina skipper
It was the second red card of Messi’s career, the first coming on his Argentina debut in 2005
Lionel Messi has now been sent off twice as often as Claudio Gentile was.
Messi had scored 670 goals since his only previous red card. So if he were to equal Sergio Ramos’ 25 career red cards, he would score 16,080 goals between the first and the 25th.6449:15 PM – Jul 6, 2019