I wonder how they will signal the digits 6-9. Maybe using the ASL signs for those numbers?
Used to be, in school ball the refs would use their extended fingers, while in pro ball (where digits over 5 were permitted), the refs would draw numbers in the air, all while mouthing the numbers in exaggerated fashion. For double-digit numbers, the ref in school ball would signal to the scorer the first digit on his right hand, and the second digit on his left hand; or if he was holding the ball, he could signal the first digit on his free hand, and then turn his hand around and signal the second digit on his hand in that position. The pro ref would simply draw a big number in the air, whether single-digit or double-digit. Then the ref, in either setting, would indicate the type of foul (e.g., a pushing motion, or hands on hips for a block, or a straight-arm or hand at back of head for a charge, or one hand grabbing or hacking the opposite arm for a grab), followed by upraised finger(s) indicating how many foul shots.
