Oleksandr Usyk weighed as a biography for the very first time ahead of his introduction at the glamour branch this weekend.
Usyk will step upward on Sunday at 2am, live on Sky Sports Main Event.
The undefeated Allied washed up at the 200lbs branch in the area of 2 decades, including that the WBA and IBF titles into his WBC and WBO belts in his 15th fight before putting all four straps online from Tony Bellew in his last excursion in November.
Usyk, that was made to postpone his heavyweight debut after a bicep injury scuppered a conflict with Carlos Takam in May, inserted just over a rock for his first fight at heavyweight after tipping the scales in 215lbs (15 rock, 5lbs).
Witherspoon (38-3, KOs 23) stepped in at late notice to substitute Tyrone Spong andThe Gentleman will have a weight advantage of nearly two stone after coming in at 242lbs.
The set melts before they split and shook hands ahead of their showdown.
Dmitry Bivol weighed against 174.3lbs ahead of his WBA light-heavyweight name defence together with Lenin Castilo making 175lbs.
WBA and WBA super-lightweight Jessica McCaskill has been 138.7lbs before the world title rematch with Erica Farias at 138.1pounds.