We've had threads before listing guys who have never been KO'd, or never been knocked down.

Let's look at it the opposite way... what fighters have never lost on the scorecards?

However, one important thing... let's only look at fighters who have AT LEAST 3 LOSSES ON THEIR RECORD.

So don't say "Floyd Mayweather." We know he's never lost on a scorecard, because he's never lost a fight, period.

Miguel Cotto, Carlos Quintana... they don't count either, because they don't have 3 or more defeats.