Jannik Sinner will launch his Australian Open title defence under a stubborn doping cloud but the whiff of scandal may do little to halt the Italian juggernaut. Sinner remains the man to beat at Melbourne Park even as doping officials seek a two-year ban for the world number one for failing two drugs tests last March.

Jannik Sinner, Carlos Alcaraz and Novak Djokovic lead the men’s field at the 2025 Australian Open. MELBOURNE, Australia — Here are some of the top men at the Australian Open, which starts at Melbourne Park on Sunday morning local time (Saturday night EST), with money-line odds via BetMGM Sportsbook:

Jannik Sinner is defiant in his innocence despite the consistent jibes levelled at him by Nick Kyrgios who has been heavily critical of the World No.1 since he tested positive twice for the substance Clostebol which was confirmed in November.

Jannik Sinner talked for the first time about Nick Kyrgios, during the media day of the Australian Open 2025. The Italian was quite clear with his words in the press conference that precedes his first round, scheduled between Monday and Tuesday, responding (so to speak) to the Australian's provocations regarding the Clostebol doping scandal.

Nick Kyrgios has vowed to turn his potential match against Jannik Sinner into "an absolute riot" if they meet at the Australian Open. Kyrgios, who has been a vocal critic of world No. 1 and defending champion Sinner over his two positive doping tests last year,