Roberto Duran,

Remember he was a lightweight yet he was able to mix it with the likes of Marvin Hagler and beat Iran Barkely to win his fourth title when way past his best?

Could Hatton or Mayweather challenge Jermain Taylor? I think not

Duran was only 5 ft 7 as well by the way, same as Hatton.

Monzon was pretty special too.