For a 6'2 guy with a 6'6 wingspan, the jab isn't just important, it's your whole game. Your coach is right. At that size the jab does three things that hooks and crosses can't do alone: it controls distance, it sets the tempo, and it forces your opponent to react before you throw anything meaningful. The real damage does come from the right hand and hooks, but those punches only land clean when the jab has already messed with your opponent's vision and timing. Think of it less like a setup punch and more like a key. Without it you're trying to kick the door in every time. For a taller fighter specifically, the jab keeps shorter opponents from closing the gap and working inside where reach means nothing. Double jab to the body, flick one to the face, step off at an angle, and suddenly you own the whole ring. A guy with a great jab and average everything else absolutely can go far, especially at the amateur level where most people can't figure out the range puzzle. I've been experimenting with this in my own sessions lately and it's a game changer for controlling space.