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: Henin-Hardenne Shakes Off Teen at U.S Open (AP) AP - Her credentials are impeccable  #151; No. 1 player in the world, winner of the Olympic gold medal. And yet, there were moments Tuesday at the U.S. Open when Justine Henin-Hardenne was in trouble, challenged by a teenager who had never played in a Grand Slam event before.

Sports