Edward Chambers is an American former professional boxer. He challenged once for a unified world heavyweight title in 2010. He was ranked as the fourth best heavyweight in the world by The Ring at the conclusion of 2009. A defensively-oriented fighter, Chambers has been widely credited for his counterpunching skills and particularly praised for his hand speed and footwork. He has also been one of the first heavyweights with ability to switch between fighting orthodox and southpaw.

Anthony Tyrone Thompson is an American former professional boxer who competed from 2000 to 2016. He challenged twice for unified world heavyweight titles, in 2008 and 2012, both times against Wladimir Klitschko. Described by many observers and fighters as stylistically "awkward", Thompson was ranked by The Ring as the ninth best heavyweight in the world at the end of 2007.