Aguero's injury, which could not be immediately confirmed by the team spokesman, would be a major blow to the South Americans' campaign to capture a third World Cup, this time on the soil of their great rivals Brazil.
"This morning the worst news was confirmed. He has a tear and won't be able to play any more in the cup," Argentine newspaper Clarin said on its website.
Coach Alejandro Sabella said afterwards he had a muscle problem, and TV channel TyC Sports reported that he had suffered a tear to his left leg.
"We have forwards of the same style as Aguero and others, with a different style, like Lavezzi, who came in and handled himself well on the wings and helped us cover spaces," Sabella said after the Nigeria game, where Lavezzi replaced Aguero.
- Sports & Recreation
- Ezequiel Lavezzi