NFL legend Tom Brady slapped YouTuber and WWE superstar Logan Paul in a bizarre exchange at a sports festival.

Seven-time Super Bowl champion Brady, 48, came face-to-face with internet sensation Paul, 31, at Fanatics Fest on Saturday (AEST) — a sports, collecting, and pop culture event in San Diego.

Watch Tom Brady slap Logan Paul via the video player below

NFL great Tom Brady slaps YouTuber Logan Paul

The pair appeared to exchange some heated verbals, before Brady slapped Paul and they were pulled apart.

New York Knicks star Karl-Anthony Towns was in between the two men and seemed stunned that they had come to blows.

Brady later took to social media, sharing the video and simply adding: “Dork.”

While Paul reacted: “This happened because I was roasting Tom for beating him in flag football. And he tries to smack me?? Horrible example for the kids.

“Aura — 100 + blocked. With a torn tricep.”

Paul previously became enraged with Brady earlier this year when the New England Patriots icon threw a ball at him during a game of flag football.

In March, Brady then mocked Paul’s football ability by saying: “Logan pulled out of a lot of fights this week. You scored 19 TDs (touchdowns) in high school. No one cares.”

The “fights” Brady referenced were rumoured bouts between Paul and All-Pro running back Le’Veon Bell and Los Angeles Rams star Myles Garrett.

The Brady-Paul spat boiled over less than 48 hours after the ex-Tampa Bay Buccanners man, who retired in 2022, stated his desire to appear in the WWE.

On Cody Rhodes’ “What Do You Wanna Talk About?,” Brady said: “I need to get an invite. I’ve been waiting for [WWE president] Nick Khan to come up with some storyline for me to get in the mix.

“I feel like I’m retired from football, and I have an opportunity to go out there and still showcase that I’m a little bit of an athlete.”

Paul made his WWE debut in 2021 and has fast-become one of the biggest stars in the industry.

He has been out of action since May due to a torn tricep which he suffered during a match at Saturday Night’s Main Event XLIV.

The injury required surgery and is expected to keep him sidelined for up to six months.