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 Masters - Houston USA Though Tim Henman may be considerably more senior than some of his more illustrious opponents at this weeks Tennis Masters Cup, he isnt quite old enough to recall the Apollo programmes famous moon shots and the sound of Mission Control at Houston 

Sports