Multiple choice general knowledge sports In 2008 Aussie Open Djokovic defeated Federer in...? 4 sets straight sets 5 sets none Reveal answer Fill a bubble to check yourself B Correct answer Explanation Novak Djokovic defeated Roger Federer in the 2008 Australian Open semifinal in straight sets (7-5, 6-3, 6-3). This was a breakthrough victory for Djokovic, marking his first Grand Slam final appearance.