On Friday, after the weigh-in, Alvarez and Crawford had their final face-off. They shook hands and showed respect, which fits with how they've acted during the whole build-up to the fight.
Alvarez caught everyone's eye with his outfit at the face-off. He wore all black - a tank top, slacks, belt, and sunglasses. His look reminded many fans of Jean-Claude Van Damme, especially from the movie 'Kickboxer'.
Van Damme started as a mixed martial artist before he went to Hollywood. He became one of the most famous movie stars in the late 1980s and 1990s.
Alvarez will defend his undisputed titles against Crawford, who's nicknamed "Bud". Even though some people are calling it the "fight of the century", that might be a bit much. Still, it's a match-up between two of the best boxers of recent times.
The promotional period has been mostly respectful, with only a few verbal jabs here and there. Now, it's almost time for the real action in the ring.
Some fans are worried for Crawford after seeing Alvarez's tough-guy look. But in boxing, it's what happens in the ring that counts, not what you wear outside it.