Alcaraz captured the 2026 Australian Open early in the season before a right wrist injury sidelined him for the French Open and Wimbledon, where Sinner defended his title to claim his fifth career major. Sinner has posted a dominant campaign overall, including a sweep of multiple Masters 1000 events and an extended winning streak, though his second-round exit at Roland-Garros created an opening for other contenders. With the US Open approaching and Alcaraz still limited in training intensity after months out, traders appear to weigh the Spaniard’s proven hard-court pedigree and title-defense experience against Sinner’s superior recent consistency and fitness. The narrow 56.5% implied probability for Alcaraz reflects uncertainty over his readiness for five-set matches and the potential for either player to add one more major before year-end.