How would the second half of your top 20 heavyweight list stack up against the first half in purely head to head terms? Match them however you see fit. Ali Wills Ali, Dec Dempsey Schmeling Dempsey, KO Louis Tunney Tunney, Dec Frazier Walcott Frazier, KO Liston Charles Liston, KO Marciano Langford Langford, Dec Lewis Patterson Lewis, KO Foreman Jeffries Jeffries, Dec Johnson Holyfield Johnson, Dec Holmes Tyson Tyson, KO
