Defending champion Polona Hercog recovered from some early struggles to book her place in the semi-finals of the Swedish Open.
Hercog overcame the Bulgarian Tsvetana Pironkova 3-6 7-5 6-4 to progress to the next round, where she will meet the seventh seed Mona Barthel, who was a 6-3 6-4 winner over Sofia Arvidsson.
A rematch of last year's final remains possible as runner-up Johanna Larsson kept her own challenge alive.
Larsson began the day by playing out her rain-delayed second-round match, dispatching third seed Anabel Medina Garrigues 6-4 6-4, and was then likely grateful for the rest as her quarter-final was cut short when sixth seed Klara Zakopalova retired due to an illness trailing 2-0.
Zakopalova was also playing in her second game of the day, having early easily beaten qualifier Mariana Duque Marino 6-0 6-1.
Mathilde Johansson was another on double duty, beating Shahar Peer 6-2 3-6 6-2 in her second-round tie before knocking out fifth seed Anastasia Pavlyuchenkova 6-4 6-0 to reach the semi-finals.