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Coco Gauff returns to Cincinnati Open action tonight with a place in the semifinals at stake. The No. 4 seed will face No. 10 Marta Kostyuk in a highly anticipated quarterfinal match scheduled for 7:30 p.m. CT on Friday, Aug. 21.
The match will be broadcast on Tennis Channel, giving fans an opportunity to watch two of the tournament’s most competitive remaining players meet under the lights. Viewers may also be able to watch online through free trials offered by select streaming providers, while Sling provides a monthly subscription option.
Coco Gauff Looks to Continue Powerful Cincinnati Run
Gauff enters the quarterfinals as one of the highest-ranked players left in the Cincinnati Open draw. Her path to this stage has included a strong turnaround after a difficult opening set in her first match.
After dropping that first set, Gauff has won six consecutive sets. She advanced past No. 28 Ann Li in the Round of 32 before defeating No. 22 Marie Bouzkova in the Round of 16. Those victories have placed the American star firmly among the tournament’s leading contenders.
Her recent form has been especially encouraging. Gauff has combined aggressive baseline play with the defensive speed that has helped make her one of the most recognizable players on the WTA Tour. If she maintains that level against Kostyuk, she could be difficult to stop.
The quarterfinal also represents another important test for Gauff as she continues her Cincinnati campaign. A victory would move her one step closer to the tournament title and strengthen her momentum heading into the latter stages of the hard-court season.
Marta Kostyuk Brings Confidence Into Quarterfinal
Kostyuk has also impressed in Cincinnati, arriving in the quarterfinals with a perfect 3-0 tournament record. The Ukrainian has already overcome a major challenge during her run and will look to produce another memorable performance against Gauff.
In the Round of 16, Kostyuk faced No. 5 Mirra Andreeva. After losing the opening set, she rallied to complete the comeback and secure her place in the quarterfinal round. That result demonstrated her resilience and ability to adjust when matches begin to move against her.
The matchup should feature plenty of pace from both sides. Gauff’s consistency and court coverage will be tested by Kostyuk’s shot-making, while Kostyuk will need to handle the pressure created by one of the tournament’s top seeds.
With both players coming off comeback victories, the contest could become a battle of endurance as much as execution. The player who protects her serve, limits unforced errors and stays composed in the biggest points may have the clearest path to the semifinals.
How to Watch Gauff vs. Kostyuk Tonight
Fans looking to watch the Cincinnati Open quarterfinal can find the match on Tennis Channel. Coverage is scheduled to begin with Gauff and Kostyuk at 7:30 p.m. CT.
- Match: No. 4 Coco Gauff vs. No. 10 Marta Kostyuk
- Round: Cincinnati Open quarterfinals
- Date: Friday, Aug. 21, 2026
- Start time: 7:30 p.m. CT
- TV coverage: Tennis Channel
- Streaming: Select services may offer free trials; Sling has a paid monthly option
Availability, pricing and trial terms can vary by provider, so viewers should review the details before signing up. Fans who already subscribe to Tennis Channel through a television or streaming package can use their existing access to follow the match.
Why This Quarterfinal Matters
Gauff is one of the tournament’s most prominent remaining names, but Kostyuk’s unbeaten record shows that she will not be an easy opponent. Both players have already demonstrated the ability to recover after losing the first set, making mental strength a central storyline.
For Gauff, the goal is to maintain the form that has carried her through six straight sets. For Kostyuk, the challenge is to turn her impressive Cincinnati run into a breakthrough victory over a top-four seed.
The winner will advance to the semifinals, while the loser’s tournament ends in the quarterfinals. With momentum, ranking points and a title opportunity on the line, the matchup promises an intense night of women’s tennis.
Frequently Asked Questions
What time does Coco Gauff play Marta Kostyuk?
The Cincinnati Open quarterfinal is scheduled to begin at 7:30 p.m. CT on Friday, Aug. 21, 2026.
What channel is showing the Gauff-Kostyuk match?
The match is scheduled to air on Tennis Channel.
Can fans stream the Cincinnati Open quarterfinal for free?
Some streaming providers may offer free trials that include Tennis Channel. Trial availability, eligibility and terms can vary.
How has Coco Gauff performed in Cincinnati?
Gauff has won six consecutive sets after losing the first set of her opening match. She defeated Ann Li in the Round of 32 and Marie Bouzkova in the Round of 16.
What is Marta Kostyuk’s Cincinnati Open record?
Kostyuk enters the quarterfinals with a 3-0 record after rallying past No. 5 Mirra Andreeva in the Round of 16.
