Last updated 4 years ago
I wonder how does spin change after contacting a racquet that doesn't move.
I don't exactly, does spin return the same direction of rotation or reverse its direction? For example, after contacting the racquet against topspin, does it return backspin retaining its direction or does it return topspin reversing its direction.
If the rubber is an inverted rubber with grip then when the topspin comes in the ball will actually change the direction of its spin and come out with topspin.
If the rubber doesn't have grip then the ball comes out without changing direction so it actually goes back to the opponent with backspin.
Take a look at this great blog and illustration by Greg Letts. How Long Pimples Really Work
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