I notice not all but some of the "slicker" fighters such as mayweather changes his stance/hand position thru out the fight to do certain things. If anyone is a fan they can easily tell when he fights he goes from shoulder roll position and then hands up real high sort of a peeka boo guard. Also he'll switch to a more open guard position. More fighters do this but he's a good example off the top of my head while you see tons of other high level fighters stay in one position the entire fight. What are the pros/cons to fighting like this?
Mayweather likes to counter punch ,so every time he makes a move ,defense or attack ,he's trying to get a reaction from his opponent putting is guard high or together he's inviting them to throw punch's there the openings for is counter you have to be very experienced at reading your opponent in expecting your opponent to do whats expected