(1) Sugar Ray Robinson – 173W 19L http://en.wikipedia.org/wiki/Sugar_Ray_Robinson (2) Rocky Marciano – 49W 0L http://en.wikipedia.org/wiki/Rocky_Marciano (3) Muhammad Ali – 56W 5L http://en.wikipedia.org/wiki/Muhammad_Ali (4) Floyd Mayweather – 46W 0L http://en.wikipedia.org/wiki/Floyd_Mayweather,_Jr. (5) Manny Pacquiao – 56W 5L 2D http://en.wikipedia.org/wiki/Manny_Pacquiao … Continue reading →