The Argentina international was forced to come off during the latter stages of Wednesday’s Supercopa second leg victory, leaving his team with 10 men for the final minutes
Barcelona defender Javier Mascherano has been ruled out of his side's La Liga opener against Real Betis due to a hamstring strain.
The Argentina international suffered the injury during Barca's Supercopa de Espana success against Sevilla on Wednesday.
Mascherano came off to leave his team, who had used all three substitutes, to finish with 10 men.
Arda Turan's brace and a Lionel Messi goal saw Barca cruise to a 3-0 victory at Camp Nou, completing a 5-0 aggregate win.
The club confirmed Mascherano would miss a week, ensuring he will miss Saturday's clash with Betis.
INJURY NEWS: Javier Mascherano has a hamstring strain in his right leg and will be out for a week #FCBlive
— FC Barcelona (@FCBarcelona) August 17, 2016
However, he is likely to be fit and available for the trip to Athletic Bilbao on August 28.