Canelo Álvarez vs. Terence Crawford, billed as Once In A Lifetime, is an upcoming super middleweight professional boxing match contested between Mexican undisputed super middleweight champion Canelo Álvarez and American former undisputed welterweight and light welterweight champion Terence Crawford for the undisputed super middleweight championship of the world. 
The bout is scheduled to take place on September 13, 2025 at the Allegiant Stadium in Las Vegas, Nevada, U.S.
Background.
In January 2025 it was reported that a bout between Saúl "Canelo" Álvarez and Terence Crawford had been agreed to be held in September 2025 in Las Vegas by Saudi promoter Turki Al-Sheikh. 
However, on February 6, "The Ring" reported that Al-Sheikh suspended the bout after reports stated Álvarez was in negotiations to face YouTuber-turned-boxer Jake Paul in May. Hours later it was reported that Álvarez and Paul were close to finalizing a May 3 bout at the T-Mobile Arena. Ultimately, Al-Sheikh announced that Álvarez had signed a 4-fight deal with Riyadh Season thus ending the negotiations with Paul and putting the Crawford bout back on track for September.
On May 3, after Álvarez defeated William Scull to reclaim his IBF super middleweight title, Crawford entered the ring and the two had a face off. Al-Sheikh later announced that the bout would take place on September 12 in conjunction with Dana White's new Zuffa Boxing league under TKO. On June 10, the bout was officially announced to take place on September 13 and will be broadcast on Netflix. On June 17, the Allegiant Stadium was officially confirmed as the host venue. It was reported that a deal was done to re-arrange an NCAA College Football game, which was scheduled for that day.
Speaking on recent comments he had made in response to boxers "running" rather than fighting, at an Álvarez-Crawford presser, Al-Sheikh announced there would be a knockout bonus for future Riyadh Season cards promoted by him, stating: "We will not have anymore". Dana White later stated that there would be an "over six figures" KO bonus for the Álvarez-Crawford fight.