Illustration of tennis players Ella Seidel and Beatriz Haddad Maia running side by side in the Seoul Marathon 2025, holding racquets, sweating, and racing toward the finish line with the Seoul cityscape and cheering crowd in the background.

Iga Swiatek Storms Ahead as 2025 Korea Open Quarterfinals Take Shape

Swiatek Cruises, Krejcikova-Raducanu Winner Awaits

Top seed Iga Swiatek delivered a statement Round of 16 win in Seoul, dismissing Romania’s Sorana Cirstea 6–3, 6–2 to reach the quarterfinals. The Grand Slam champion showcased her signature baseline dominance and impeccable footwork, never allowing Cirstea a foothold in the match. Swiatek now awaits the winner of the postponed clash between Barbora Krejcikova and Emma Raducanu, a match loaded with intrigue: Krejcikova is a Grand Slam winner, while Raducanu’s resurgence continues after a long injury layoff. Either player will present a fascinating contrast to Swiatek’s high-octane rhythm.

Tauson and Joint Bring the Heat in Youth-Driven Section

Clara Tauson is quietly assembling one of her most consistent weeks of 2025. The Dane powered past Germany’s Eva Lys 6–2, 7–6(4), showing her blend of power and poise under pressure. She’ll next face rising Australian teenager Maya Joint, who stunned former Australian Open champion Sofia Kenin 6–3, 6–1. Joint was fearless, breaking Kenin five times with aggressive returns and clever angles. The all-under-22 quarterfinal promises a dynamic battle of pace and future potential.

Siniakova Stuns Kasatkina, Lamens Grinds Past Shnaider

It was a day of gritty wins in the third quarter. Czech veteran Katerina Siniakova upset Daria Kasatkina 7–6(2), 6–2, showing vintage doubles-inspired net play and a fearless forehand. Across the net in the quarters will be Suzan Lamens, who earned one of her biggest WTA wins yet with a composed 6–4, 6–4 victory over big-hitting Russian Diana Shnaider. The Dutch qualifier is turning heads with her no-frills, high-discipline game — and she’ll need every ounce of it against the unpredictable Siniakova.

Ella Seidel Wins Epic, Alexandrova Powers Through

Ella Seidel and Beatriz Haddad Maia played the match of the round lasting 3 hours and 31 minutes! The German wild card fought back from a set and a break down to win 6–7(4), 7–6(3), 7–5 after more than three hours of tension.

Haddad Maia vs Seidel – Full Match Stats

Statistic Haddad Maia Seidel
Dominance Ratio 0.96 1.04
Serve Rating 249 252
Aces 3 0
Double Faults 9 11
1st Serve % 62% (72/117) 55% (68/124)
1st Serve Points Won 75% (54/72) 71% (48/68)
2nd Serve Points Won 40% (18/45) 54% (30/56)
Break Points Saved 60% (6/10) 73% (8/11)
Service Games 78% (14/18) 83% (15/18)
Ace % 2.6% 0%
Double Fault % 7.7% 8.9%
Return Rating 119 147
1st Return Points Won 29% (20/68) 25% (18/72)
2nd Return Points Won 46% (26/56) 60% (27/45)
Break Points Won 27% (3/11) 40% (4/10)
Return Games 17% (3/18) 22% (4/18)
Pressure Points 43% (9/21) 57% (12/21)
Service Points 62% (72/117) 63% (78/124)
Return Points 37% (46/124) 38% (45/117)
Total Points 49% (118/241) 51% (123/241)
Match Points Saved 0 1
Max Points In A Row 7 5
Total Service Games 78% (14/18) 83% (15/18)
Total Return Games 17% (3/18) 22% (4/18)
Total Games 47% (17/36) 53% (19/36)
Max Games In A Row 3 5
Injury Timeouts 0 0
Match Duration 3h 31m

In contrast, Ekaterina Alexandrova had a more straightforward path, recovering from a sluggish start to defeat France’s Loïs Boisson 4–6, 6–2, 6–2. The Seidel-Alexandrova quarterfinal is a study in contrasts: Seidel thrives on consistency and court coverage, while Alexandrova plays flat, first-strike tennis.

Korea Open 2025 Quarterfinal Lineup

  • Iga Swiatek (POL) vs. Barbora Krejcikova (CZE) / Emma Raducanu (GBR)
  • Clara Tauson (DEN) vs. Maya Joint (AUS)
  • Suzan Lamens (NED) vs. Katerina Siniakova (CZE)
  • Eva Seidel (GER) vs. Ekaterina Alexandrova (RUS)