Australian Open 2012: Andy Murray v Novak Djokovic head-to-head The Serb swept aside his first three opponents but did have a surprising wobble in dropping a set to Lleyton Hewitt in round four. The 24 year-old eased past fifth seed David Ferrer in the quarter-finals, despite saying afterwards he suffered breathing difficulties, and looks fresh again after fading at the end of last season. PAST MEETINGS While Murray would certainly have hoped for an easier opponent than Djokovic, there must be a certain relief for the world No 4 that for once he does not find Rafael Nadal on the other side of the net in a major semi-final. The pair's amazing tendency to be drawn in the same half, and the Spaniard's frequent success, means Murray has only met Djokovic once before at grand slam level. That came last year in the final at Melbourne Park, and Murray will be absolutely determined to bury the memory of that day, the most disappointing of his three grand slam final defeats. The pair have met 10 times before, with Djokovic leading 6-4, but Murray has had plenty of success over the past couple of years and won their most recent meeting to take the title in Cincinnati last summer, albeit through a Djokovic retirement. GAME Murray and Djokovic have been rivals since their junior days and know each other's games inside out. Djokovic admitted himself that the key difference in his superb 2011 season was confidence. The Serb, a bit like Murray, used to have a tendency to get down on himself very quickly in matches, but the British No 1 is going to have to work extremely hard to get under Djokovic's skin on Friday. His ability to turn defence into attack is arguably the best the sport has ever seen, a result of his superb movement, and he does not have any discernible weaknesses. Murray possesses greater variety and must utilise this, while a high first-serve percentage will also be key as cheap points will be worth their weight in gold. Most of all the British No 1 must believe in himself as, like his clashes with Nadal at this stage, the result is likely to depend on a few key points, and he must be the one who seizes the moment.