PRAGUE — Top-seeded Karolina Pliskova advanced to the semifinals of the Prague Open Thursday with a 6-2, 5-7, 6-1 victory over wild-card entry Denisa Allertova in an all-Czech match.
The 14th-ranked Pliskova got three breaks in the final set and converted her first match point with a backhand return winner to beat Allertova in their first encounter.
Pliskova took the first set with one of her 10 aces before the 103rd-ranked Allertova rallied, converting her fifth set point to win the second set.
Yanina Wickmayer of Belgium plays qualifier Danka Kovinic of Montenegro in another quarterfinal at the clay court tournament, while four Czech players will play in the remaining two quarterfinals: third-seeded Barbora Strycova faces Katerina Siniakova and wild card Klara Koukalova takes on qualifier Lucie Hradecka.