After influencers interrupted Naomi Osaka's opening match at the U.S. Open, their presence and tennis etiquette have become a hot topic at the Grand Slam tournament

TAMARA PRENN IN NEW YORK: Naomi Osaka was in the thick of the second set against Russian star Anastasia Zakharova, serving at 40-40 in the fourth game.

The US Open has entered its influencer era, but not everyone is liking the content. Here's what's happening

As long as they “follow the etiquette.”