Barcelona defender Rafael Marquez is expected to be out of action for two weeks after tearing a calf muscle in training, the Spanish champions said. Marquez, who was recovering for a knee injury, suffered a fresh setback ahead of Barca's friendly game with Seattle Sounders in the US. The Mexico captain will miss the crucial World Cup qualifier against the US on August 12th. He is also likely to sit out Barca's Spanish Super Cup first-leg tie with Athletic Bilbao for days later. However, Marquez could be fit for the Primera Liga opener on August 31st against Sporting Gijon at Nou Camp. Meanwhile, Barca have thrashed Sounders 4-0, courtesy of goals from Lionel Messi (twice), Jeffren and Pedro.