It was Sergio Martinez - http://www.boxrec.com/boxer_display.php?boxer_id=14429

It was Saul Roman he KO'd. Martinez is the WBC number 1 now, so Floyd Mayweather...watch out He's a pretty good fighter, a southpaw. I've only seen him against Margarito and Stone and I've read a lot about him.

Can't say I remember to much about him.