Golovkin beats Brook by fifth round TKO
WBA/WBC/IBF middleweight champion Gennady Golovkin (36-0, 33 KOs) scored a fifth round stoppage over IBF welterweight champion Kell Brook (36-1, 25 KOs) on Saturday night at the O2 Arena in London.
It was Golovkin's 23rd consecutive KO and 17th world title defence.
Golovkin rocked Brook with a hard left hook in the first, but the British challenger recovered well and landed some shots of his own late in the round.
Brook landed several punches throughout the fight, but they never seem to affect Golovkin.
Good two-way action continued in rounds 2 and 3, but by the fourth, Golovkin was in control with his heavy blows, causing swelling to the right side of Brook's face.
Brook, who moved up two weight divisions for the fight, was getting overpowered by Golovkin as the bout progressed and the end came when the Kazakhstan fighter unloaded a brutal barrage of punches in the fifth, prompting Brook's trainer, Dominic Ingle to throw in the towel at 1:57 of the round.
"I promised to bring 'Big Drama Show,' like street fight," said Golovkin. "This is not boxing, this is more like street fight."
Brook went to the hospital after the fight with a broken orbital bone around his eye.
"I'm devastated," said Brook. "I think in the second round, he broke my eye socket.
"He's a scary champion. Nobody wants to fight him, but I would fight him again. He is a great champion."
Also on the card, IBF bantamweight champion Lee Haskins (33-3, 14 KOs) outpointed fellow Briton Stuart Hall (20-4-2, 7 KOs) in a rematch.
Haskins repeated his 2012 points win over former IBF champion Hall to retain his world title for the second time.
Hall had his moments and rocked Haskins with hard rights on a few occasions, but the champion landed more punches and was the busier fighter.
Haskins was awarded scores of 115-113, 117-111 and116-112.
IBF flyweight champion John Riel Casimero (23-3, 15 KOs) halted British challenger Charlie Edwards (8-1, 3 KOs) in the 10th round.
The Filipino dropped Edwards with a left hook before the referee intervened after the follow-up punches.