Errol Spence Jr. vs Terence Crawford fight predictions, odds, undercard, Showtime Boxing, expert picks

Check out who the experts at CBS Sports are taking in the main event from Las Vegas on Saturday night

Boxing fans are so close to seeing a fight they've been salivating over for years when Errol Spence Jr. steps in the ring to face Terence Crawford to crown an undisputed welterweight champion.

Spence, the WBC, WBA and IBF champion, enters the fight with a perfect 28-0 record. While he has only ever held a world title at welterweight, he has dominated the division against top-tier competition. Spence has also made it clear that this fight is his final time competing at 147 pounds.

WBO champ Crawford is also undefeated at 39-0. He has held titles at other weight classes, however, holding the WBO title at lightweight before moving up to junior welterweight where he became undisputed champion. He now enters Saturday's fight seeking to claim undisputed status again.