[graywolf624]

Actually, a wrestler has been trained, just like any person who is trained in a fighting sport.. to see attacks comming based on indications of your body. So thats how.. They dont have to see your arm.. Neither do I.. Just the movement of your body gives it away.. Your stance even.. Clarkson had an interesting show on speed that mentioned it. I dont actually ever see your arms move, I see the indications that your arm will move. And that is key even in wrestling.

You clearly don't understand wrestling.. The key isnt trying to take them down while they swing at you.. The key is to use the force of their punch to take them down and push their arm behind them.. It requires no energy at all if you follow the natural motion of their body and weight.

Theres some really simple basic wrestling moves and they are all based on weight transfer.. You use the power of the swing to your advantage..
A boxer is going to swing at your cheat or head.. If you can read as you have to in all martial arts.. Your going to be able to respond.. its knowing how to respond thats the key. If you miss with the read. you get hit.. but then you pull out and strike from lower. In essence the boxers only chance in such a fight is to keep you at arms length long enough to knock you out.. You get in too close hes screwed. Thats seen time and time again in mwa.