England's Kell Brook has stretched his perfect record to 33 straight wins by beating Shawn Porter by a majority decision to capture the International Boxing Federation's world welterweight title.

The 28-year-old Brook, who was taking part in the first title fight of his career, improved to 33-0, with 22 knockouts as he handed Porter the first loss of his career on Saturday.

"I took it off him in his backyard," Brook said.

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"I was nine years old dreaming of becoming a world champion and now I am."

Brook, of Sheffield, England, won handily on two judges' scorecards, 117-111 and 116-112, while a third scored it a draw, 114-114.

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Brook is hoping this 147-pound title victory sets up an mega fight in the UK with former two-time world champion Amir Khan.

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Khan reacted to the bout via social media on Saturday, tweeting "Well deserved @SpecialKBrook get in there!"

American Porter was making the second defence of the IBF title he won in December. Porter dropped to 26-1-1 with 15 knockouts.

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"He took my belt tonight," Porter said.

"I want the rematch. I don't care where we have to go to get it done."

Both fighters were cut near the eye due to accidental head butts over the 12-round battle at the StubHub Center stadium in south central Los Angeles.

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Porter defeated Paulie Malignaggi his last time in the ring in April with a technical knockout in the fourth round.

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Porter's record received a blemish after a draw to Julio Diaz in 2012, but he reeled off four consecutive wins from there leading up to the Brook bout on Saturday.

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Those wins included a rematch victory against Diaz and a unanimous decision win over then titleholder Devon Alexander.

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