Carlos Alcaraz's dominant 100% implied probability on Polymarket stems from his actual victory at the 2026 Australian Open, where the top seed clinched the men's singles title by defeating Novak Djokovic in the final on January 31 after a straight-sets masterclass on hard courts. Traders' pre-final consensus heavily favored Alcaraz (-320 moneyline across sportsbooks) due to his superior form, flawless run through the draw as world No. 1, and Djokovic's age-related vulnerabilities despite the Serb's record 10 AO triumphs. With the Grand Slam concluded months ago, the market has fully resolved to Alcaraz; no realistic challenges remain, though pre-event upsets, injuries, or withdrawals from contenders like Jannik Sinner could have altered outcomes in comparable futures. Grigor Dimitrov's trace 0.1% reflects his early first-round exit to Tomas Machac.