Liverpool says forward Fernando Torres ruptured a thigh muscle playing for Spain in the World Cup final but could be ready for the club's opener against Arsenal on Aug. 15.

Torres, injured for much of last season, pulled up during overtime of Sunday's 1-0 win over the Netherlands in Johannesburg.

"The initial assessment was he had a mild adductor tear and the Spanish medical staff didn't consider it to be too serious at the time," Liverpool medical chief Peter Brukne said Wednesday. "

He had an MRI scan yesterday, which confirmed a small tear. He should be able to resume training within two-to-three weeks and be able to play again within three-to-four weeks."