Cincinnati loses Zverev and Sabalenka in round of 16

The Cincinnati Open experienced significant upheaval Wednesday as two of its top seeds, Germany's Alexander Zverev and Belarus's Aryna Sabalenka, were knocked out in the round of 16. Their departures, along with those of Félix Auger-Aliassime and Alex de Minaur, have reshaped both the men's and women's draws.

Sabalenka's elimination is particularly impactful as it puts her world number one ranking in jeopardy. She has held the top spot for 96 weeks, but Kazakhstan's Elena Rybakina, currently ranked world number two, needs only to reach the final to potentially claim the No. 1 position. Rybakina is set to face Poland's Iga Swiatek in her quarterfinal match.

While many other top women's seeds, including Jessica Pegula and Coco Gauff, advanced, the men's singles bracket has seen even more dramatic exits. Zverev and Auger-Aliassime's defeats follow earlier withdrawals from world number one Jannik Sinner and Carlos Alcaraz. This leaves only Taylor Fritz and Flavio Cobolli from the ATP's Top 10 remaining in the quarterfinals.

The surprising performances and early exits of key favorites, especially in the men's field, cast a shadow of doubt over the upcoming US Open. With less than two weeks until the Grand Slam begins, the fitness and form of top contenders like Zverev and Novak Djokovic, alongside the potential absence of Sinner and Alcaraz, create significant uncertainty for the tournament.