Can you name any other fighter in history that can go through Mayweathers career?

By that i mean in the style that he has. Hasn't been properly knocked down ( a glove touching the canvas although technically a KD, not put on his back side), only been hit hard (wobbled) 3 or 4 times in his career if that! He has made A fighters look like D fighters. Can you honestly name another fighter who could go through his career without a blemish and in the style that he has done it because people like to slag him off saying Guerrero, Maidana, Ortiz etc aren't top notch competition which i agree with but he hasn't exactly had an easy ride to the top. He has fought tough guys along the way and i cant see the likes of SRR going through his resume in such style. Can you name someone that could?