The Belarusian top seed squandered significant leads in both sets against the Czech outsider, raising concerns ahead of her US Open title defense.

World number one Aryna Sabalenka faced a surprising fourth-round exit at the Cincinnati Open, suffering a defeat that casts a shadow over her upcoming US Open title defense. The top-seeded Belarusian fell to Czech challenger Sara Bejlek in a match where Sabalenka held substantial leads in both sets, only to see them slip away.

The 28-year-old tennis star, who was 5-1 up in the first-set tiebreak and later 4-1 ahead in the second set, ultimately lost 7-6 (9-7) 6-4. This unexpected loss marks another setback in her preparations for the New York major, following early exits in previous tournaments.

Beyond the immediate disappointment, Sabalenka's position as the world's top-ranked player is now vulnerable. Elena Rybakina has an opportunity to overtake her in the rankings if she advances to the Cincinnati final, according to reporting by BBC Sport - Tennis.

Sabalenka's Quest for a US Open Three-Peat Hits Snags

Sabalenka is aiming to achieve a significant milestone at the US Open, attempting to become the first woman since Serena Williams in 2014 to win three consecutive titles at the tournament. However, her journey leading up to the major, which begins on Sunday, August 30, has been far from ideal.

Her recent performance includes early losses at both the Cincinnati and Toronto Opens. Since securing the "Sunshine Double" at Indian Wells and Miami in March, Sabalenka has only reached one semi-final, where she was defeated by Jessica Pegula in Berlin.

Sara Bejlek Secures Career-Defining Win at Cincinnati Open

For the 20-year-old Czech, Sara Bejlek, currently ranked 35th globally, this victory represents a major career breakthrough. It marks her first-ever win against a top-10 opponent and her debut appearance in a WTA 1,000 quarter-final.

After the match, an elated Bejlek shared her feelings, stating, "I totally lost my words. I just keep believing and that was the key today." She further added, "She played amazing tennis and I was just believing, keep fighting and I was just trying my best and that's it." Bejlek, who previously won the Abu Dhabi hard court title as a qualifier in February, is now set to face former Australian Open champion Madison Keys in the last eight.

Tommy Paul Stages Impressive Comeback in Men's Cincinnati Event

The men's draw at the Cincinnati Open also witnessed a significant upset on Wednesday, with American Tommy Paul eliminating top seed Alexander Zverev. Paul saved a match point during his thrilling 4-6 7-6 (8-6) 6-4 victory.

Germany's Zverev, the reigning French Open champion, had initially won the first set and led 4-3 in the second before a 90-minute rain delay. Despite holding a match point at 6-5 in the second-set tie-break and leading 4-2 in the decider, Zverev couldn't close it out. Paul capitalized, winning four consecutive games to secure his spot in the quarter-finals, where he will play Italy's Flavio Cobolli.

Frequently Asked Questions

What was the score of Aryna Sabalenka's match against Sara Bejlek?

Aryna Sabalenka lost to Sara Bejlek at the Cincinnati Open with a final score of 7-6 (9-7) 6-4.

Is Aryna Sabalenka's world number one ranking in jeopardy after her Cincinnati loss?

Yes, Aryna Sabalenka's world number one ranking is under threat. Elena Rybakina could replace her at the top of the rankings if Rybakina reaches the Cincinnati Open final.

What is Aryna Sabalenka's goal at the upcoming US Open?

Aryna Sabalenka is aiming to become the first woman since Serena Williams in 2014 to win three successive US Open titles. The US Open is scheduled to begin on Sunday, August 30.

Who will Sara Bejlek play next in the Cincinnati Open quarter-finals?

Sara Bejlek will face former Australian Open champion Madison Keys in the quarter-finals of the Cincinnati Open after her win against Aryna Sabalenka.

Did any other major upsets occur in the Cincinnati Open men's event?

Yes, in the men's event, American Tommy Paul defeated top seed Alexander Zverev in a comeback victory, winning 4-6 7-6 (8-6) 6-4 after saving a match point.