Defending champion Novak Djokovic forced the Australian Open final into a fifth set when he levelled it at two sets each against Austria's Dominic Thiem on Sunday. Djokovic, 32, pounced at 4-3 up for the only break of the set, and then served it out with an ace for 6-3. Serbia's Djokovic, 32, is seeking his eighth Australian Open title while Thiem, 26, is looking for his maiden Grand Slam crown. th/mp