Williams Sisters first-round opponents at the Rio de Janeiro Games, the Czech Republic’s Lucie Safarova and Barbora Strycova, never had won any sort of match as a pair, at any event. And they had zero wins between them in Olympic doubles competition, going a combined 0-3 with other partners.

So it was rather stunning, to say the least, when the Williams sisters were beaten 6-3, 6-4 by Safarova and Strycova in the first round in Rio.

This was the 34-year-old Serena’s second match of the day: The 22-time major singles champion won her first-rounder in that event earlier Sunday. The 36-year-old Venus, meanwhile, now has two first-round exits at the Rio Olympics, because she was beaten in singles on Saturday night.

Safarova and Strycova did their best to keep hitting shots toward Venus when she was at the baseline, while Serena was left to stand near the net and watch those exchanges.