Jannik Sinner enters as the clear frontrunner on the men's side, riding strong hard-court form after claiming the Wimbledon title, while defending champion Carlos Alcaraz faces ongoing wrist injury concerns that prompted his Cincinnati withdrawal and could limit his draw impact. On the women's side, world No. 1 Aryna Sabalenka, the two-time US Open champion, holds the top spot in trader consensus amid a rested preparation following mixed Grand Slam results. Key variables include recent Masters results, official injury reports, seed positioning in the draw, and historical hard-court records for players like Elena Rybakina, Jessica Pegula, and Alexander Zverev. Late-round fatigue or unexpected qualifier breakthroughs remain realistic variables that could shift finalist probabilities in the final weeks before the August 30 start.