Photos: Errol Spence, Terence Crawford - Grand Arrivals in Las Vegas

Fight week officially kicked off Tuesday as undefeated boxing superstars and pound-for-pound greats Errol “The Truth” Spence Jr. and Terence “Bud” Crawford made their grand arrivals at MGM Grand before they meet this Saturday, July 29 headlining a SHOWTIME PPV from T-Mobile Arena in Las Vegas in an event presented by Premier Boxing Champions. (photos by Esther Lin)

The unified WBC, WBA and IBF Welterweight World Champion Spence and WBO Welterweight World Champion Crawford will face-off Saturday night in a much anticipated clash to crown the first undisputed 147-pound champion of the four-belt era, with the winner likely to emerge as the sport’s top pound-for-pound fighter.