But here goes. Here are the greatest pound-for-pound fighters in the 100-plus-year history of the sweet science.

was considered the best pound-for-pound fighter in the world by those in the know, and was even discussed as a potential challenger for Sugar Ray Robinson's mythical all-time pound-for-pound title.

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"Patrick Willis has earned that nod as the best ... all." NFL Vice President of Football Operations Merton Hanks initially fined Smith $15,000, but rescinded it and issued him a warning. LB ...