Christophe Ena/Associated Press
PARIS — Beating the 23-time major singles champion Serena Williams or No. 1-ranked Naomi Osaka at the French Open was one thing. Following up those upsets with other victories two days later was entirely something else for Sofia Kenin and Katerina Siniakova.
The women responsible for beating Williams and Osaka in the third round bowed out in the fourth round Monday, with Kenin losing to No. 8 seed Ashleigh Barty, 6-3, 3-6, 6-0, and Siniakova defeated by No. 14 Madison Keys, 6-2, 6-4.
It’s a common occurrence at Grand Slam tournaments: An unseeded player knocks off a far more accomplished opponent but fails to do enough to win again the next time on court.