Influencers are infiltrating this year's US Open. It's not stopping tennis lovers.

Garrett Ellwood/USTA via Getty Images This post originally appeared in the BI Today newsletter. You can sign up for Business Insider's daily newsletter here. More than tennis 🎾 The US Open has long morphed from a simple tennis tournament into a two-week experience in one of the best boroughs in New York. With merch drops, celebrities in the stands, and viral food items on-site with eye-popping price tags, it's become the social event of September in New York. This year, which runs til…