ret
International Debutant
i m lost here, i thought average speed would be X+Y/2 but you can have X or Y > avg speedIndeed. But if it is the average speed, then it will be lower than the speed noted on TV in modern times which is the speed a split second after delivery. This is because the ball loses pace in the air and off the surface.
but you said that this was measured over 18 yards vs 22 yards now-a-days and it takes the ball less time to reach 18 yards than 22 yards, so i guess things even out at the end of the day