Eddie Hearn is backing Katie Taylor to knock Amanda Serrano out in their mega Madison Square Garden showdown this weekend.
The Matchroom CEO watched on at the Mecca of boxing on Wednesday as the undisputed lightweight champion was put through her paces by trainer Ross Enamait at the open workouts.
The 20-0 Bray fighter has only won six of her professional bouts by stoppage, with the last of those coming over three years ago.