to ko someone you have to hit them on the chin. i have wobbled bigger guys than myself with jabs when i have hit them on the chin but generally the natural instinct is to hit the centre of the face. if you think of focus pads you always aim for the spot in the middle. this doesnt encourage hitting the chin. so focusing on hitting people on the chin instead of just hitting them makes a big difference! sounds opbvious but is very hard to do in the heat of battle
thats true, most punches landed are on the nose and forehead with the occasional one in the eyes, i dont think ive been hit in the chin before though i was put on my ass by one i didnt see so that probably hit the sweet spot.