[The Weebler II]

Alexander - Kotelnik, Bradley, Matthysse, Maidana, Bailey
Chisora - Fury, Ziausys, Helenius, Klitschko, Haye
Cotto - Foreman, Mayorga, Margarito, Mayweather, Trout
Dawson - Pascal, Diaconu, Hopkins, Hopkins, Ward
Froch - Abraham, Johnson, Ward, Bute, Mack
Hopkins - Jones Jr., Pascal, Pascal, Dawson, Dawson
Johnson - Green, Froch, Bute, Fonfara, Groves
Judah - Matthysse, Mabuza, Khan, Paris, Garcia
Mayweather - Hatton, Marquez, Mosley, Ortiz, Cotto
Ortiz - Harris, Peterson, Berto, Mayweather, Lopez
Pacquiao - Margarito, Mosley, Marquez, Bradley, Marquez
Ward - Green, Bika, Abraham, Froch, Dawson

Some of those have four tough fights and one relatively easy fight, others have fights spread out over five years as opposed to one or two and some fight away from home more than others.

I'm sure there are other fighters I have missed out, I'm interested to see who else could be added to the list.