|
we need to know the level of the testers.
They should be pro players with very consistent shots.
If they are just amateur players, they are not qualified and the result should be void.
One thing we can tell differences between pro and amateur players is:
in a real game, in case of a broken string or a mis hit on racquet frame during a smash,
pro players will hit the shuttle into the net 99.99% .
non-pro players 90% of the time will score because of the
sudden change of the trajectory of the shuttles
yet it still goes over the net. |
|