“One of the most important issues for us is to make sure everybody feels safe when they come here,” Haas told reporters on Tuesday. “Particularly with her case, of course it’s on our minds. Now, I wouldn’t go into the details of if we went above and beyond, just for her personally, but I’m glad to hear that she’s feeling great and that all of these measurements are in place.”

Indian Wells is known for being one of the friendliest tournaments of the year, attracting a clientele which – like the population of nearby Palm Springs – is dominated by wealthy retirees. The practice courts are always mobbed by fans, and on Tuesday Raducanu herself mentioned feeling “so much love, even on the player lawn” – a prominent green space at the front of the site where all the players do their warm-ups.

The very openness of the set-up is a challenge for the security guards, who could be heard shouting for fans to move aside promptly whenever a player passed by on Tuesday.

As Haas pointed out, tennis has so far avoided a repeat of its most notorious stalking case, the one involving the crazed Steffi Graf fan who stabbed Monica Seles in the shoulder in Hamburg in 1993. But there is always some small element of risk. Presidential-style security cannot be guaranteed for every player. And even if it could, heavy policing would darken the mood of this frothy summertime sport.

“You want to give the fans something worth seeing and being up close and personal,” Haas explained. “If it’s by the practice courts, if it’s closer to the tennis courts, you make sure that everyone behaves in a certain way. Anything that is not acceptable, you readjust.

“But you know, we are known for a tournament where we have lots of amazing tennis fans, lots of tennis knowledge. I think for the most part, everybody respects that.”