Dashing left-hander Yuvraj Singh injured his right hand during a fielding session Wednesday causing concern in the Indian camp ahead of their Champions Trophy opener against Pakistan on Saturday.Yuvraj was enthusiastically taking part in the fielding session at the University Ground in Johannesburg. But in the process, he ended up hurting his right finger so badly that he could not participate in the batting and bowling session.Team manager Anurag Thakur said the medical examine would determine whether the middle-order batsman has suffered a fracture.