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Gangwon FC forward Lee Keun-ho has been ruled out of next month's FIFA World Cup with a torn medial collateral ligament in his right knee, the Korea Football Association (KFA) said on Tuesday. Lee sustained the injury during a K League 1 game against Gyeongnam FC last Saturday, reports Yonhap news agency. Though Lee was stretchered off the field, his K League 1 club initially said the injury wasn't serious and he'd be able to compete in the World Cup. But further tests revealed more severe damage, and Lee has joined a few others on the national team injury shelf.