Trevor Berbick around 1996, Jean Pascal last year, Shannon Briggs, Yuri Foreman, Erislandy Lara, Luis Ortiz. I've met plenty of world champions at the fights who were just there as spectators-everyone from Mayweather to Riddick Bowe, Evander Holyfield, both Klitchkos, Antonio Tarver, Michael Moorer, Larry Holmes, Lennox Lewis, many many more