Roger Federer Swarmed By Massive Crowd of Fans in NYC

Roger Federer caused insane pandemonium out in the Big Apple on Tuesday … when a crush of passionate fans crowded together to try to get a brief glimpse of the tennis superstar.

TMZ Sports got video of the insane scene outside Uniqlo on Fifth Avenue in NYC … where Federer was doing a Q&A for the clothing brand.

Of course … Federer — currently the #3 ranked male tennis player — famously left Nike for the Japanese company last year for $300 MILLION.

Just by looking at the scene outside the store, it’s clear 38-year-old Federer is still one of the biggest sports superstars on the planet.

Of course, it’s something that tends to happen when international ballers hit up NYC … remember how bonkers it got when Manchester United superstar Paul Pogba hit up the Adidas store last month?