Melbourne: It's tennis's most intense rivalry but recent momentum and a lop-sided draw have given Novak Djokovic the edge over Rafael Nadal as he seeks a record fourth straight Australian Open title. (Click here for latest on Australian Open)
While Serena Williams is the unbackable favourite for the women's trophy, Djokovic and Nadal, the world number one, are nearly inseparable at the top of the men's game.
When they last met in Melbourne in 2012, it took five hours and 53 minutes, the longest ever Grand Slam final, before Djokovic finally prevailed in five exhausting sets. (Also read: I can knock off Rafa, Djoko, says Federer)