It’s too garbled to tell. Just before 6 p.m., a train arrives heading west to Ashburn and pulls to a stop. There are riders seated inside, but when the Metro doors slide open, no one steps out.

When raindrops fall onto Roland Garros’ red clay this year, umbrellas will open up, but not a roof over court Philippe Chatrier. So far, the only real weather hiccup has been Alexander Zverev's ...