Santiago Lencina struck twice as River Plate hammered 10-man Instituto ACC 4-0 on Saturday, making for two wins from two matches for the visitors in Argentina's Clausura championship. River top Group B standings with six points, while Instituto sit seventh with three points. Facundo Colidio put River ahead in the 44th minute, with a deflected shot before 19-year-old Lencina doubled their lead just moments before halftime with a left-foot strike that deflected off Instituto centre back Fernando