Given the form he's been showing in the last 14 months, most people aren't surprised that Roger Federer is once again world No. 1.
Roger Federer beat Marin Cilic in five sets in the Australian Open final Sunday to become the first man to win 20 grand slam titles.
Roger Federer reached a seventh Australian Open final, and 30th grand slam final overall, when South Korea's history-maker Hyeon Chung retired injured.
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