Jean-Marc Mormeck vs. David Haye, billed as Le Duel, was a professional boxing match contested on 10 November 2007, for the WBA, WBC and The Ring cruiserweight championship.

[1] After regaining the WBA, WBC, The Ring and lineal[2] cruiserweight titles in his March 2007 rematch with O'Neil Bell, Jean-Marc Mormeck agreed to face European cruiserweight champion David Haye, overruling his promoter Don King who had wanted him to face Steve Cunningham (whom he also promoted).

"[4][5] The bout was originally set for 28 September, but it was pushed back to 10 November to avoid a clash with the Rugby World Cup.

Haye was able to recover in the next two round before early in the 7th landing a power right uppercut, left and right hook combination that floored the champion.

The victory meant Haye became the seventh Britain to then hold a major world title, along with Joe Calzaghe, Enzo Maccarinelli, Clinton Woods, Junior Witter, Gavin Rees and Ricky Hatton.