Re: Now that Castillo is done, where does he rank?
Personally, I rank him ahead of Corrales.
I think he was a great lightweight, and had I been in charge of the "Chico" matchup I'd have stopped it earlier - But full credit to Corrales for showing the heart of a warrior and winning the bout.
Realistically, the only fighter he failed to beat in his prime (at lightweight) was Mayweather - I don't buy the business that he won the first fight, but he did trouble him. He has wins over Corrales (tainted admittedly), Diaz, Casamayor, Lazcano, Johnston among other credible competitors, and aside from Mayweather is the greatest lightweight of his time, in my opinion anyway.
His fight with Hatton at 140lbs aside, he's never been blown away in a matchup, I think he deserves to be remembered as a top20 lightweight.