Ramirez. When you engaged Ramirez, he could be dangerous. He beat Rosario twice, and the arguello fight was damn close. I have never been sure about what was up in the Mancini fight. But if you could run all night like Camacho or Whitaker in the first fight, then Ramirez didn't look so good. Whitaker fought a much better fight the next time around. Camacho's victory over Ramirez was very impressive.
There was a point in the Rosario fight where Rosario backed him up momentarily and got on top of him, and for a moment he looked very uncomfortable but Rosario did not keep it going, Mancini seemed to do that the whole fight didn't he.
Maybe if you backed him up and overwhelmed him he was not the same fighter.