Sinner's withdrawal due to knee inflammation has opened the men's draw at the 2026 US Open, with Zverev installed as top seed and Alcaraz as defending champion in the opposite half despite a four-month wrist injury layoff. The projected quarterfinals under seeding include Zverev against de Minaur, Auger-Aliassime versus Cobolli, Medvedev facing Djokovic, and Shelton meeting Alcaraz, underscoring how draw position and recent hard-court form heavily shape implied probabilities for reaching the final eight. Alcaraz's rust after limited match play contrasts with Zverev's steadier recent results and favorable early path, while Djokovic's physical condition at age 39 and Medvedev's experience add volatility to the bottom half. Traders are weighting injury recovery timelines, head-to-head records on hard courts, and the North American swing momentum for players like Fils, Shelton, and Nakashima when assessing quarterfinal advancement odds.