Konta was not the only player to achieve a milestone for her nation on Tuesday. The unseeded Magdalena Rybarikova became the first woman from Slovakia to reach a Wimbledon semifinal when she beat CoCo Vandeweghe, 6-3, 6-3.

The match was suspended in the middle of the second set because of rain and then moved to Centre Court. Vandeweghe, who had been playing well under her new coach, Pat Cash, handed Rybarikova more than half of her 59 points, with 30 unforced errors and seven double faults.

“That’s why Grand Slams are the hardest tournaments,” Vandeweghe said. “They’re over two weeks, and you have to play well for two weeks.”

Rybarikova, 28, has done that for several months after recovering from surgery on her left wrist and right knee a year ago. Her victory made this the 17th straight Grand Slam tournament with a first-time women’s semifinalist, underscoring the wide-open nature of the women’s game during the past four years. Rybarikova, ranked No. 87, will play 14th-seeded Garbiñe Muguruza, who beat No. 7 Svetlana Kuznetsova, 6-3, 6-4.

The fifth women’s winner on the day did not even play. With Halep’s loss, Karolina Pliskova will rise to the No. 1 ranking when the new WTA rankings come out on Monday. Pliskova, who lost to Rybarikova in the second round, replaces Angelique Kerber, who was eliminated by Muguruza on Monday.

Konta is No. 1 with British fans, many of whom stood in a steady rain inside the grounds to watch her victory. They huddled under umbrellas on Henman Hill, watching on a giant video screen as Konta played under the roof of Centre Court.