Elina Svitolina moved into the Brisbane International semifinals when Johanna Konta retired with a hip problem in the third set of their quarterfinal.

Third-seeded Svitolina had just held for a 3-2 lead in the third set when Konta walked to the net and said she could no longer continue, two games after receiving treatment for a right hip problem. Konta's early exit came two days after No. 2-ranked Garbine Muguruza retired in the third set of her first match of the season after struggling with leg cramps.

Konta dominated the first set after saving four break points early but Svitolina rallied to win the next in a tiebreak and advance with a score of 1-6, 7-6 (6), 3-2, retired.

Svitolina will play either defending champion Karolina Pliskova or 2012 winner Kaia Kanepi for a place in Saturday's final.

Aliaksandra Sasnovich had a 3-6, 6-2, 6-3 over Alize Cornet to extend her winning streak to six matches, including qualifying.

Denis Istomin secured a spot in the men's quarterfinals with a 7-6 (5), 6-2 win over Jared Donaldson. He will next play either Ryan Harrison or Yannick Hanfmann, who was a late addition to the draw after Andy Murray withdrew.