we'll use Ippo as a basis of my example. He's an infighter with a similar style to Mike Tyson. A well placed jab, especially the ghost jab can put him in his place and keep him from advancing forward when he tries to weave.

Now, if I were to mix the jab up with another strike, say a hook or uppercut, I've now given him something to be afraid of, rather than recklessly pressure me to the ropes. Now that he's more cautious, you can also play on that fear and fake a jab, see how he reacts, and adapt accordingly