Switzerland's Stan Wawrinka returns the ball to Spain's Rafael Nadal during their men's singles tennis match on day four of the ATP World Tour Masters 1000 - Rolex Paris Masters - indoor tennis tournament at The AccorHotels Arena in Paris on October 31, 2019. (Photo by Christophe ARCHAMBAULT / AFP) (Photo by CHRISTOPHE ARCHAMBAULT/AFP via Getty Images)
