From a Wall Street Journal story by Rachel Bachman headlined “A Lunch With Roger Federer Helped Fuel Mikaela Shiffrin’s Record Run”:
Mikaela Shiffrin and her mother, Eileen, last March pulled up the drive to a house perched in the Swiss Alps, one of the most breathtaking areas in all of Europe.
They saw a gleaming, modern home. They spied a green wall made famous by a viral video of a tennis player clad all in white—even his fedora—repeatedly volleying a ball during the early stages of the pandemic.