Kerber, Kvitova to meet in Bad Homburg semi-finals
After rain washed out Thursday's schedule, Kerber played her quarter-final on Friday morning when she ground out a 2-6, 6-3, 6-3 over Amanda Anisimova of the USA.
At the same time, Kvitova, the top seed in Bad Homburg, powered her way into the semi-finals with a 6-3, 7-6 (12/10) win over Argentine fifth-seed Nadia Podoroska in her rain-delayed quarter-final on Friday.
"I am happy that I could turn the match and play again here this evening," said Kerber, a three-time Grand Slam winner.
"I'm looking forward to the match, I'm using it as preparation for Wimbledon.
"I can't remember the last time I played twice in one day."
This will be Kerber's first semi-final appearance for nearly two years.