Katsidis and Angulo are the two best. Some of you guys are ****ing out of your skulls naming dudes like Mayweather. Floyd can land a bit on the inside, sure, but that's not what makes a guy an in fighter. The wrongest answer you could possibly give to this question is "Mayweather".
Wrong. When PBF chooses to fight on the inside he can be among the very best in boxing. He walks guys into shots they don't see and his accuarcy and defense is amazing while working there he mixes up his shots beautifully there.