Cain Velasquez and Fabricio Werdum both carried title belts into UFC 188 .
It was Fabricio Werdum who left as the undisputed best heavyweight in the world -- and , possibly , of all time .
Cain Velasquez and Fabricio Werdum both carried title belts into UFC 188 , but it was Werdum who left as the undisputed best heavyweight in the world -- and , possibly , of all time .