Shawn Porter challenges Errol Spence, says he'll take his title

By Chris Williams: Shawn Porter says he’s still waiting on IBF welterweight champion Errol Spence Jr. for him to sign his side of the contract for a unficiation fight at 147-pounds this summer. Porter (30-2-1, 17 KOs), who holds the WBC welterweight title, says he’s not afraid of Spence (25-0, 21 KOs), and he’s confident […]