Joe Calzaghe stopped Germany's Mario Veit in the sixth round to successfully defend his WBO super middleweight title in Braunschweig, Germany, on Saturday.
Calzaghe (right) had too much power for his German opponent
Calzaghe floored Veit, who he beat inside one round four years ago, with a big left hook at the end of the fifth.
He then put the German on the deck twice in the sixth and after the second time, 42 seconds into the round, the referee stopped the fight.
"Veit has improved a hell of a lot but he never hurt me," said Calzaghe.
"He did his homework but I am the champion and that is all that matters. He moved away from my left well."
Veit was full of compliments for Calzaghe, who remains undefeated.
The German said: "He is a deserving champion and it was over after the first knock-down."
Calzaghe oozed confidence before the fight, while Veit looked very nervous, and it was the Welsh fighter who started the better.
He controlled the first four rounds with swift combinations, and although Veit landed the occasional good punch of his own, Calzaghe comfortably held the upper hand.
After a spirited exchange in the middle of the fifth Calzaghe finished the round in style as he floored Veit with a big left hook to the head.
Veit clambered back to his feet to beat an eight count, and the bell kept his hopes alive, but it was a temporary respite.
Calzaghe soon sent him to the canvas with another unanswered combination to the head and body at the start of the sixth.
Veit's corner was close to throwing in the towel but the end was quick in coming as the referee stepped in following another dangerous flurry of punches.
The champion clinched his 39th victory in as many fights, while Veit drops to 45-2, with his only two losses coming at the hands of Calzaghe.