Watch it: Julius Francis, boxer-turned-security guard, decks unruly man

Watch it: Julius Francis, boxer-turned-security guard, decks unruly man.

The power is the last thing to go.

Former heavyweight title contender Julius Francis and one-time opponent of Mike Tyson demonstrated that in his capacity as a security guard at the entertainment venue BOXPARK Wembley in London.

An angry man can be seen on a video that went viral yelling obscenities and scuffling with security staff and others.

The man then made the mistake of marching toward the 57-year-old Francis, who knocked him out cold with a vintage right hand about 45 seconds into the video.

Check it out:

Francis (23-24-1, 12 KOs) was stopped by Tyson in the second round in 2000. The Londoner, who last fought in 2006, also teaches children boxing and fitness

Watch it: Julius Francis, boxer-turned-security guard, decks unruly man

Watch it: Julius Francis, boxer-turned-security guard, decks unruly man.

The power is the last thing to go.

Former heavyweight title contender Julius Francis and one-time opponent of Mike Tyson demonstrated that in his capacity as a security guard at the entertainment venue BOXPARK Wembley in London.

An angry man can be seen on a video that went viral yelling obscenities and scuffling with security staff and others.

The man then made the mistake of marching toward the 57-year-old Francis, who knocked him out cold with a vintage right hand about 45 seconds into the video.

Check it out:

Francis (23-24-1, 12 KOs) was stopped by Tyson in the second round in 2000. The Londoner, who last fought in 2006, also teaches children boxing and fitness

More classic fights: Mike Tyson highlights Showtime’s June lineup

Five Mike Tyson fights will be televised on June 12 in Showtime’s ongoing series “Showtime Boxing Classics,” which airs each Friday night.

A collection of Mike Tyson fights highlights the June line-up for the Friday night series “Showtime Boxing Classics.” All programs begin at 10 p.m. ET / PT.

Showtime kicks off the month on June 5 with the 2017 Fight of the Year Anthony Joshua vs. Wladimir Klitschko, in which Joshua got up from a knockdown to stop Klitschko and retain his heavyweight belts, and the 2013 Marcos Maidana vs. Adrien Broner brawl.

Five Tyson fights will air on June 12. His opponents: Francois Botha, Julius Francis, Lou Savarese, Brian Nielsen and Clifford Etienne. These were among the last fights in Tyson’s career, after he lost the championship to Evander Holyfield.

On June 19, the series will showcase Andre Ward vs. Arthur Abraham and Carl Froch vs. Glen Johnson. Ward is back against Froch on June 26. Ward emerged as a star in part because of his victories in those fights.

Combat sports analysts Luke Thomas and Brian Campbell will host live companion episodes of their digital talk show “Morning Kombat” on the Morning Kombat YouTube Channel for select Showtime Boxing Classics telecasts. They watch the fights along with viewers, give their real-time reactions and take questions from fans throughout the replay.

Viewers can follow along and participate in the discussion by using the hashtag #FightFromHome on Twitter, Instagram and Facebook.

Showtime is available to subscribers via cable, DBS, and telco providers, and as a stand-alone streaming service through Amazon, Apple, Google, LG Smart TVs, Oculus Go, Roku, Samsung Smart TVs and Xbox One. Consumers can also subscribe to Showtime via Amazon’s Prime Video Channels, Apple TV Channels, AT&T TV Now, FuboTV, Hulu, The Roku Channel, Sling TV and YouTube TV or directly at www.showtime.com.