Terence Crawford wins the undisputed welterweight title with a major win over Errol Spence Jr.

LAS VEGAS – Terence Crawford produced the best performance of his career in his biggest fight, dominating Errol Spence Jr. from start to finish Saturday at T-Mobile Arena, claiming the heavyweight championship welter without a doubt.

Referee Harvey Dock mercifully pulled Crawford from Spence at 2:32 of the ninth round as Spence reeled around the ring from Crawford’s quick, accurate punches. Crawford was running away when Doc stopped him. Crawford landed 185 of 369 total pounds, dominating Spence in a way not seen in a major fight in years. Spence’s face showed the wear and tear of the blow from the third round onwards and he could have been stopped as early as the seventh.

In the process of scoring a ninth round TKO and increasing his record to 40-0 with his 31st KO, Crawford became the first undisputed male boxer in two weight classes, placing welterweight to his former undisputed super lightweight title.

Crawford dropped Spence in the second and twice in the seventh, and after a slow first round, he energized Spence and pummeled him with clean, hard shots.

Crawford added Spence’s IBF, WBA and WBC belts to the WBO title he brought into the fight.

Spence’s trainer, Derrick James, told Yahoo Sports before the fight that he felt the importance of the bout would elevate both men’s games. Crawford raised him to incredible heights.