Andre Ward is tipping Carl Froch to emerge victorious from Saturday's rematch with Mikkel Kessler.
The American is the only man to have beaten both fighters and is rumoured to be set to fight the winner of the O2 Arena bout.
Ward believes Froch has faced a higher calibre of opponent than Kessler and says he would be "shocked" if the Dane wins.
"Carl Froch has been in some tough fights but I think he has more in the tank," Ward told Boxing News magazine.
"I think Kessler has kind of dipped a little bit since he and I fought, and even since he fought Froch the first time. Even though it's going to be a tough fight, it's going to be back and forth, I can't see Kessler winning this.
"Kessler's last two performances, he hasn't fought the best guys - a shopworn Allan Green then Brian Magee, who's very tough but limited - and he's going to look good against them but I don't know if he has the same fire as when he fought Froch the first time.
"I would be shocked if Kessler got his hand raised. I think Froch wins and I wouldn't be surprised if Froch caught and stopped him."