As far as knuckleball pitchers are concerned, do they get to throw what they want, or are there signs for them as well? - Quora
Should Nationals pitcher Shawn Kelley earn a lifetime ban from baseball? Let's debate, This is the Loop
Jamie Moyer - Wikipedia
Ex-Red Sox knuckleballer Wakefield dies at 57 : r/sports
R.A. Dickey Wins 20th Game for the Mets - The New York Times
Knuckleball 101
New York Mets Knuckleballer R.A. Dickey Talks About His Pitch, Being Sexually Abused As A Child, Climbing Mount Kilimanjaro, And Bryce Harper
Baseball Bench Coach
The Knuckleball Can Devastate, So Why Don't All Pitchers Throw It? : The Two-Way : NPR
Retired Red Sox knuckleballer Tim Wakefield dies at 57