Jannik Sinner’s dominant 2026 campaign, marked by a 44-3 record, multiple Masters titles, and a second straight Wimbledon crown, anchors trader consensus at roughly 50 percent implied probability for the US Open title. Carlos Alcaraz’s 12.5 percent pricing reflects his extended wrist-injury layoff since April and uncertain readiness despite an official entry, while Alexander Zverev and Novak Djokovic sit near 12 percent each on the strength of consistent recent results and the absence of the top two from Cincinnati. Ben Shelton and Taylor Fritz hold smaller shares amid solid hard-court form, though the field remains wide open given Sinner’s own minor knee concern and the inherent variability of best-of-five-set matches on outdoor hard courts in late August.