It’s finally time for one of the biggest battles in boxing history. The undisputed welterweight world championship will be decided with the contest between Terence Crawford and Errol Spence Jr. The two famous boxers will square off on pay-per-view on Saturday from Las Vegas’s T-Mobile Arena for the undisputed 147-pound title.

Crawford and Spence Jr. are both ranked in the top ten pound-for-pound fighters in the world, making this a unique boxing showdown. Here is all the information you need to know about the Crawford-Spence Jr. fight:

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Date: The top welterweights will face each other on Saturday, July 29.

Time: Three fights are scheduled to take place before Crawford and Spence Jr., who will then enter the ring at 8 p.m. ET. Around 11 p.m., the main event’s ring walk will take place.

Location: The fight will be held in Las Vegas, Nevada’s T-Mobile Arena.

How to watch: For $84.99, Showtime PPV subscribers can view the event. PPV.com also offers streaming of the match for the same price.

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This contest has been building for a while. In Oklahoma City in 2018, the two got into an argument backstage, making a clash unavoidable. Now, after five years and numerous exchanges of trash talk, the two fighters will square off in the ring.

Crawford is ranked first pound-for-pound by Bleacher Report thanks to three divisional titles, a 39-0 record, and 30 knockouts. Since Viktor Postol in 2016, he hasn’t even faced an opponent who could go the distance with him.

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Spence will be the 35-year-old’s hardest test, though. He has held the welterweight title since 2017 and boasts an amazing unblemished record (28-0, 22 KO).