Terence Crawford wins undisputed welterweight crown with beatdown of Errol Spence

• Crawford stops Spence in ninth round to unify all four belts
• Round-by-round report: Errol Spence v Terence Crawford

Terence Crawford administered a shocking beatdown of Errol Spence in their long-awaited unification bout on Saturday night, becoming the first undisputed welterweight champion in nearly four decades while staking a credible claim as the world's best fighter regardless of weight.

Crawford knocked down Spence in the second round and twice more in the seventh before referee Harvey Dock intervened at the 2:32 mark of round nine. No one in the sold-out crowd of 19,990 at the T-Mobile Arena would have protested if he'd stepped in sooner.