You can throw every single punch going backwards, it only depends how do you set them up. Just simply going backwards and throwing arm punches won't stop anyone and your back will be on the ropes all the time.



See Walcott breaking down and taking his head when he goes backwards and just of a sudden he only breaks down and shoots the right or the left and if you are in balance you can go back and break as many times as you need until you set the other guy(2:34 for example). Now see how he gives him self a lot of punching room and also how his head is outside of the left hand of Louis.



From 1:12 onward you see how to set the left uppercut as counter for the left jab. See again how he transfers his weight over his left knee, how he gives himself space and how at the same time he evades the left hand.