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UFC middleweight champion Dricus du Plessis submitted former champion Israel Adesanya in the fourth round to retain his title at UFC 305 in Perth, Australia.

Back-to-back right hooks knocked down a retreating Adesanya, with Du Plessis taking him back and sinking in the rear naked choke. Adesanya tapped, stopping the bout 3 minutes and 38 seconds into the five-minute round on Sunday.

It was the first time Nigerian-New Zealander Adesanya was submitted in his professional MMA career, which stands at 24 wins and four losses. South Africa’s Du Plessis, who has won all eight of his fights since joining the UFC, progressed to 22 wins and two losses.

“I always knew if I’m in trouble fighting one of the, if not the best strikers ever in this division, I need that takedown,” Du Plessis, 30, said after his first title defence since winning the belt in January.

“This man is the king of getting back up. No one can take him down and keep him there.”

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