Anthony Joshua defends his WBA, IBF and WBO world heavyweight titles against Andy Ruiz Jr at Madison Square Garden tonight.
A stacked undercard precedes the main event, including British talent in the form of Callum Smith, Joshua Buatsi and Josh Kelly, as well as Irishwoman Katie Taylor.
While UK viewers will have to watch the headline bout through Sky Sports Box Office, the undercard went live on Sky Sports Boxing YouTube from 10pm BST and will run until the start of the main card at 11.30pm.
That means fight fans can watch Chris Algieri vs Tommy Coyle, Joshua Buatsi vs Marco Antonio Periban and Josh Kelly vs Ray Robinson for free.
Speaking about the stacked pre-amble, head of Sky Sports Boxing Adam Smith said: “Tommy Coyle is bouncing around like a little boy, he’s so happy to be here.
“It’s a fantastic story, the boy from Hull who’s come all the way here to New York and tackling Chris Algieri, a great talker and a great fighter himself.
“What a way to get things started, I’m really looking forward to seeing two of our great hopes Joshua Buatsi and Josh Kelly in action, I believe both of them are going the whole way.
“It’s wonderful having Katie Taylor attempting to become the undisputed champion and saving the toughest until last in the WBC Champion Delfine Persoon, that is going to be some fight and some test for Katie.
“Callum Smith the leading Super-Middleweight after that terrific display in the World Super Series against George Groves.
“It is time to get Callum back on our screens, it has been a long time but we’re really looking forward to getting him going again and he’s got a tough challenge in Hassan N’Dam, who I’ve known a long time.
“What an opportunity they’ve all got on the big stage before the big boys go to work. Enjoy it everybody. It’s going to be a super event on Sky Sports Box Office on Saturday.”
Anthony Joshua vs Andy Ruiz Jr – FULL UNDERCARD
Souleymane Cissokho vs Wladimir Hernandez
Chris Algieri vs Tommy Coyle
Joshua Buatsi vs Marco Antonio Periban
Josh Kelly vs Ray Robinson
Katie Taylor vs Delfine Persoon
Callum Smith vs Hassan N’Dam
Anthony Joshua vs Andy Ruiz Jr
Austin Williams vs Quadeer Jenkins
Diego Pacheco vs Jared Chauvin