(Photo credit: Mike Frey-Imagn Images)

The No. 1 and No. 2 seeds each fell in straight sets on a chaotic first day of women's competition in the Libema Open at 's-Hertogenbosch in the Netherlands on Monday.

No. 1 seed Ekaterina Alexandrova of Russia -- a two-time winner at the event in 2022 and '23 -- fell 6-4, 7-6 (5) to Hungary's Panna Udvardy, who ranks nearly 50 spots lower (65th to 17th). In a match that was statistically even in a number of spots, the difference may have been Udvardy's one more converted break (3 of 6) in an equal number of chances.

Second-seeded Clara Tauson of Denmark lost 6-4, 6-4 to Slovakia's Mia Pohankova, a 17-year-old who won the final five games of the match to secure her first career top-30 win. No. 3 seed Belgian Elise Mertens avoided the same fate with a thorough 6-1, 6-2 defeat of Canada's Bianca Andreescu.

In other Monday action, Poland's Magda Linette rallied for a 2-6, 6-1, 6-2 win over Australian Kimberly Birrell, Robin Montgomery pulled out a 5-7, 6-0, 6-4 victory against Daria Kasatkina of Australia and Ukraine's Daria Snigur swept Spain's Paula Badosa 6-1, 7-6 (2).

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Karolina Pliskova of the Czech Republic rallied for a 6-7 (1), 6-3, 6-3 defeat of McCartney Kessler in first-round action at London.

Pliskova was sloppy on her serve with three aces and 11 double faults but made up for it by winning 51% of her return points and converting 8 of 11 break-point opportunities.

In the only two other matches completed on Monday, when multiple matches were delayed or postponed by rain, Great Britain's Harriet Dart beat Liudmila Samsonova of Russia 5-7, 6-4, 6-3, while Romania's Jaqueline Cristian swept Qinwen Zheng 6-4, 7-6 (4).

The final match of the day, which pitted No. 8 seed Leylah Fernandez of Canada against Great Britain's Katie Boulter, was suspended due to darkness with Fernandez up a set and the second set level at 3 games apiece.

--Field Level Media