Former world number one Kerber crashes out to Teichmann in Ostrava Open

Former world number one Angelique Kerber was stunned by Jil Teichmann as she lost 6-2 6-3 in Tuesday's Ostrava Open first-round tie.

World number 42 Teichmann raced to a memorable victory against the three-time grand slam winner in just over an hour as the left-hand collected her sixth win against a top-20 player this season.

Half of those wins have come this year as well, with the Swiss beating Naomi Osaka, Belinda Bencic and Karolina Pliskova in a breakthrough Cincinnati campaign.

Fifth seed Anastasia Pavlyuchenkova cruised through after negotiating a difficult first set against Ana Konjuh to win 7-6 (7-3) 6-1 in just over an hour-and-a-half.

OSTRAVA!!! Just keeps GIVING!!! Tereza Martincova comes from 5-0 down in a deciding-set tiebreak, saves a match point, and outlasts compatriot Siniakova in over three hours!#OstravaOpen pic.twitter.com/VlmDlt0MNs

— wta (@WTA) September 21, 2021

Tereza Martincova's victory over fellow Czech Katerina Siniakova did not come as easily, though, with the former edging to a 5-7 6-4 7-6 (9-7) win in more than a three-hour slog.

Martincova, who is ranked 61st in the world, miraculously recovered from 5-0 down in the tie-break to save a match point before securing her first main-draw win in Croatia.

Yulia Putintseva experienced similar difficulties against Shuai Zhang, as she also battled out in a three-hour marathon and saved a match point to eventually succeed 5-7 7-6 (9-7) 6-4.