Really? Lewis had a pretty solid chin.. Haye has glass temples not chin. Hatton was a face first brawler who only got KO'd twice in a near 50 fight career by A+ level fighters.
Right now, the worst chins in boxing probably belong to Wlad Klitschko, Roy Jones, and Zab Judah, while the best chins belong to Sam Peter, James Toney, Israel Vasquez, and Antonio Margarito. Older week-chinned fighters included: Terry Norris, Michael Grant, Tommy Morrison, Michael Moorer, Tommy Hearns(Argueably), and Floyd Patterson.
Peters punch resistance is gone my friend.. Anthony Mundine has a case of glass jaw.. he got starched by Ottke.