Ostrava Open: American qualifier Parks stuns Pliskova in first round

American qualifier Alycia Parks caused a huge upset at the Ostrava Open on Tuesday when she beat former world No 1 Karolina Pliskova 6-0, 7-6 (3) at the Ostravar Aréna on Tuesday evening.

Parks, ranked No 144, will play No 4 seed Maria Sakkari next.

Ostrava WTA 500, other first-round results (Ostravar Aréna, hard, USD 757.900, most recent results first):

• Karolina Muchova vs. Beatriz Haddad Maia
• Shelby Rogers vs. Barbora Krejcikova
• Belinda Bencic vs. Eugenie Bouchard
• Daria Kasatkina (5) beat Emma Raducanu: 7-5, 6-4
• Aliaksandra Sasnovich beat Jelena Ostapenko (8): 6-2, 6-2
• Catherine McNally (Q) beat Anna Blinkova (Q): 6-1, 6-2
• Tereza Martincova (WC) beat Jil Teichmann: 7-6 (1), 7-6 (5)
• Petra Kvitova (WC) beat Bernarda Pera (Q): 6-3, 2-6, 6-4
• Elena Rybakina beat Madison Keys: 5-7, 6-3, 6-3
• Ekaterina Alexandrova beat Victoria Azarenka: 6-4, 4-6, 6-2
• Ajla Tomljanovic (Q) beat Shuai Zhang: 6-3, 6-3