Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Tennis: Hewitt beats Gaudio to reach Masters Cup semis HOUSTON, United States : Australia #39;s third-ranked Lleyton Hewitt reached the semi-finals of the ATP Masters Cup by defeating Argentina #39;s Gaston Gaudio 6-2, 6-1.

Sports