Joseph Parker has won in a majority decision over Chinese heavyweight Zhilei Zhang for the interim WBO belt.
Parker came off arguably one of the best performances of his career when he beat American Deontay Wilder in a unanimous decision in December, which took his record to 34 wins and three losses.
Zhang went in with a 26-1-1 record after defeating Joe Joyce twice last year.
The Knockout Chaos card is headlined by Anthony Joshua fighting Francis Ngannou.
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