This is USA apologizes if i make a mistake.

Chad Dawson
Bernard Hopkins
Kelly Pavlik
Cory Spinks
Vernon Forrest
Paul Williams
Floyd Mayweather
Paul Malignaggi
Juan Diaz
Steven Luevano

This is UK.

Enzo Maccarinelli
David Haye
Joe Calzaghe
Clinton Woods
Gavin Rees
Junior Witter


USA has 10, UK has 6.