A defiant Novak Djokovic launches his latest bid to win a record 25th Grand Slam crown while title contenders Coco Gauff and Iga Swiatek are also in action at the Australian Open on Monday. A bumper second day at Melbourne Park sees three-time finalist Daniil Medvedev, home hope Alex de Minaur and fourth seed Amanda Anisimova also enter the fray. The 38-year-old Serbian great Djokovic faces Spain’s 71st-ranked Pedro Martinez on the final match of the day on Rod Laver Arena. A former world number one, now ranked four, Djokovic is the undisputed king of Melbourne’s hard courts, having won a record 10 Australian Open crowns. He has won 24 major titles, equal for the most ever with Australia’s Margaret Court, but a 25th has remained agonisingly out of reach. With Carlos Alcaraz and Jannik Sinner now dominant, Djokovic’s last Grand Slam victory came at the US Open in 2023. Despite age and injury catching up with him, Djokovic said on the eve of his favourite tournament: “I know that when I’m healthy, when I’m …