I know 大振り is usually used in baseball to refer to a big swing of the bat, but what is its meaning in boxing? I found it in the following sentence from a manga in which a boxer is being encouraged by its trainer:
I think it refers to a fast and strong punch, but why is it considered a negative thing in this case? I would be grateful if you also could correct my translation and explain the general meaning of the sentence. My attempt:
Your punches can knock him down if you manage to hit him! But don't overdo it and avoid fast punches! Start from the combinations!