Jonah Lomu donned a special black shirt in support of his younger brother's boxing bout tonight.
Lomu posed with headliner Joseph Parker at yesterday's weigh-in event for the fight night at Auckland's Trusts Stadium.
Lomu's brother John is set to take on Dave "Brown Butterbean" Letele this evening.
"He's been working hard. I'm looking forward to it," Lomu said.
Parker's fight with Sherman "The Tank" Williams is tonight's main attraction.
The 22-year-old, who tipped the scales at 104.95kg, said: "I'm just confident in myself and what I can do in the ring."
Williams, who weighed in at 120.4kg, has been stopped only once in 52 professional fights.
Usyk won the fight by unanimous decision, with all three judges scoring it 116-112.