To deal with this kind of loser, let me teach you how you should reply him.

Whenever he said ur a noob, just admited it instead of denying him like this:

"Yea sure, i'm the noob who just owned a pro like urself. Lol."

After that he'll be so pissed. simply bcos his words cannot annoy you while you stab him in the face sarcastically.

Because if I were the noob, then what are you? what's worse than a noob? scrub? lol.

Try that.