Yeah, with the exception of the clinic he put on Kelly Pavlik the last 12 years of his career was hard to watch.
Pernell Whitaker - just don’t enjoy his style although I respect his ability and achievements Michael Spinks - not boring exactly but ugly to watch
Obviously all great fighters with tons of success, but not exactly exciting to watch: Holmes Lewis Klitschko Brothers Monzon Benitez Locche Whitaker