Because the body can no longer meet the demands of the game,Brazilian soccer star Ronaldo announced his retirement from football on Feb.14,2011,ending a magnificent career in which he won two World Cups with Brazil and leaves the top goal scorer in World Cup history. Because the body can no longer meet the demands of the game,Brazilian soccer star Ronaldo announced his retirement from football on Feb.14,2011,ending a magnificent career in which he won two World Cups with Brazil and leaves the top goal scorer in World Cup history.