In baseball, the knuckleball is quickly disappearing - The Washington Post
Is the knuckleball an optical illusion?
R.A. Dickey On 'Winding Up' As A Knuckleballer
Unpredictable and unmanly: baseball's fear of the knuckleball, Baseball
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Former Red Sox knuckleballer Wakefield dies at 57
Why MLB's baseball draws scrutiny and suspicion - The Washington Post
Throwing a Knuckleball [LOVE THROWING] Day 8
The knuckleball is dying out of baseball
It might be time for an MLB knuckleball pitch comeback - Los Angeles Times
Former MLB Red Sox knuckleball pitcher Wakefield dead at 57
It might be time for an MLB knuckleball pitch comeback - Los Angeles Times
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The Rays and the return of the Knuckle Ball - DRaysBay
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