Fight Night Champion, the boxing sim successor to 2009's Fight Night Round 4, has revealed its roster of real-world contenders, including new faces David Haye and Butterbean Eric Esch and reuniting players with old favorites such as Tyson, Ali, Frazier, Calzaghe, LaMotta and Holyfield.
Both Sugar Rays Leonard and Robinson make the 54-strong list, as do the Klitschko brothers, Manny Pacquiao, and Ricky Hatton.
There's also a career mode in which players can take a new boxer from obsurity to world domination.
Muhammed Ali and Mike Tyson are on the cover of the North American version, while David Haye is the UK's cover star.
The Xbox 360 and PlayStation 3 game has a release date of March 1, 2011 in North America, March 4 in the UK.