A first half goal from Guido Rodriguez, his first in 11 international appearances, gave Lionel Messi's Argentina a 1-0 win over Uruguay in a dour Copa America clash.
Uruguay hadn’t beaten Argentina in the Copa America since 1989 and they went behind early on to Rodriguez’s header.
The Real Betis midfielder started for his country for the first time since June 2019 and he justified that decision when he converted a cross from Messi after 10 minutes.
The goal gave Argentina all three points and condemned their neighbours to a losing start to their Copa campaign.
“We deserved to win,” said Argentinian midfielder Rodrigo de Paul. “Today we tried to be more compact, to make it more difficult to score against. Up front we have monstrous players who can get goals at any moment of the match.”
The result in a game that was end-to-end but lacking in real excitement at an empty stadium in Brasilia leaves Uruguay joint bottom of Group A with no points, alongside Bolivia, who have played two and lost two.
Argentina move into joint top spot with four points alongside Chile, who beat Bolivia 1-0 earlier on Friday. Paraguay have three points from one game.
Striker Edinson Cavani was back for Uruguay after missing the last two games through suspension and he produced one of the few memorable moments for his side when he was unfortunate to see a loud shout for a penalty waved away after 26 minutes.
It was indicative of Uruguay’s unhappy night that although they had slightly more of the possession they never managed a shot on goal the entire match.
At the other end, Messi caused problems for Uruguay with his dribbles in the last third but he was frequently crowded out by Uruguayan defenders.
The result extended Argentina’s unbeaten run to 15 games since they lost in the semi-final of the last Copa America in 2019.
It also snapped a run of three consecutive draws and boosted the confidence of a side aware their great rival Brazil are scoring freely and are hot favourites to win a second consecutive Copa America playing at home.
“We’ve lacked a bit of luck to get victories (recently),” said Argentina's second half substitute Angel Di Maria. “Today we managed to do that against a direct rival who are always contenders for the Copa America.
"Brazil are the best team (so far). We’re taking it step by step and the dream is alive, I hope we can make it come true. Argentina are always a candidate but Brazil are at home and are doing things very well.”
Argentina's next game is against Paraguay on Monday, while Uruguay take on Chile the same day.