MADRID, March 9 (Xinhua) -- Brazilian star Ronaldinho is doubtful for Barcelona's Primera Liga clash against Real Madrid onSaturday at the Nou Camp due to muscle problems.

    The forward sustained the injury in Tuesday's Champions League away goals defeat against Liverpool, and club doctors said that a scan had ruled out a muscle tear.

    Ronaldinho, Barca's leading scorer this season with 17 league goals, would follow a special training programme on Friday to determine whether or not he would be ready to play against Real.

    Barca will also be without French winger Ludovic Giuly and Italy full back Gianluca Zambrotta who are suspended after being sent off in last weekend's 2-1 defeat at title rivals Sevilla. Enditem