His first professional game for Sporting Lisbon came when he plays in the "Portuguese Super League" match at the age of 17 and that was the start of a journey which will make him one of the greatest players ever. Ronaldo was popular with other students at the school, but he was expelled at the age of 14 after he threw a chair at his teacher. Ronaldo said the reason he did it was that the teacher disrespected him. Despite it being a negative thing, it turned into a great turning point in his life. His mother then encouraged him to focus all his attention on soccer which he did and turned him into an international sensation.