Fiorentina striker Giuseppe Rossi has suffered a sprain and second-degree damage to the medial collateral ligament in his right knee — the same knee that endured two ACLsurgeries, the Serie A giant reported on Monday. New Jersey-born Rossi, who is an Italy international, sustained the injury following a horror challenge by Livorno’s LeandroRinaudo, which drew criticism from Viola coach VincenzoMontella after the 1-0 home win. He is expected to miss up to three months, but could return in time to be included in Italy coach Cesare Prandelli’s World Cupsquad.