Lionel Messi may sit out Argentina's next Copa America game against Peru to rest a sore thigh with his team already qualified for the next round after two wins.
World champions Argentina showed their steel and killer instinct as they beat Chile 1-0 on Tuesday to book their place in the Copa America quarter-finals.
Just as it looked like Argentina would be made to rue their missed chances substitute Martinez pounced on a rebound from a corner and lashed home a right-footed shot in the 88th minute to ensure victory and a top-two spot in the group for the defending champions.
David's 74th-minute goal was Canada's first under new manager Jesse Marsch. Prior to Tuesday's victory the Canadians had failed to score in two international friendlies and their opening Copa America match against Argentina.
Brazil's poor performance in their goalless draw against Costa Rica in their Copa America opener on Monday has dampened the enthusiasm surrounding their new manager and a revamped squad headlined by Vinicius Jr.
Argentina and Chile will write a new chapter in their long-standing rivalry on Tuesday's Copa America Group A clash at MetLife Stadium in East Rutherford, New Jersey, the same stage where "La Roja" thwarted the reigning world champions in the continental final in 2016.
Brazil had more than 75% possession in the first half and had a goal disallowed for offside but struggled to crack open the disciplined Costa Rican defence.
Eight years ago, Messi was part of the Argentina team which lost the Copa America final on penalties to Chile at the New Jersey venue -- with the striker missing his team's first effort in the shoot-out.
Colombia's ninth consecutive win maintained an impressive run of 19 victories and five draws since March 2022, with their last defeat a 1-0 loss to Argentina in February 2022.
This year, the Argentina captain gets to celebrate his birthday with the national team in the middle of the Copa America, ahead of their Tuesday Group A fixture against Chile in New Jersey.
"The hierarchy (of Brazil) is respected, but not feared. If you're afraid to play, you don't show up," the coach told a press conference on Sunday.
Brazil open their 2024 Copa America campaign against Costa Rica on Monday in Los Angeles with a whole new look almost from top to bottom, with Real Madrid's rising star Vinicius Jr leading a group that were waiting for an opportunity for a fresh start.
Uruguay's win saw them move level with the United States on three points. The U.S. beat Bolivia 2-0 in the day's other Group C match.
The 62-year-old coach took over the reigns of the 'Selecao' in January with the team having endured a poor start to World Cup qualification in South America.
USA captain Pulisic curled in a superb early goal before teeing up a second for striker Folarin Balogun just before half-time at the AT&T Stadium in Arlington.
Brazil's teenage prodigy Endrick will be hoping to make his first appearance for the national team at a major tournament when his country take on Costa Rica in their Copa America opener on Monday.
Ecuador were forced to play with 10 men from the 22nd minute of the game at Levi Stadium when striker Enner Valencia was sent off for dangerous play.
This year's tournament brings together 10 South American teams and six invited nations from the North and Central America and the Caribbean Confederation (CONCACAF) in the second Copa hosted by the United States.