Football player's jewelry? (8)

I believe the answer is:

backspin

(Other definitions for backspin that I've seen before include "Ball's rotation" , "Rotary movement contrary to direction of travel" , "Lifting rotation of ball" , "It slows or reverses a ball's forward motion" , "Pink scab (anag.)" .)

I've seen this clue in The Wall Street Journal.

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