Red Sox: A look back at knuckleball pitchers in team history
Former Red Sox knuckleballer Wakefield dies at 57
Tim Wakefield dies due to brain cancer
Knuckleball!' Considers the Unpredictable Pitch - The New York Times
Notable Knuckleballers - Sports Illustrated
The Knuckleball Can Devastate, So Why Don't All Pitchers Throw It? : The Two-Way : NPR
Tim Wakefield, former Pirates knuckleball pitcher who revived his career with the Red Sox, dies at 57
Red Sox pitcher Tim Wakefield dead at 57
All-Star pitcher breaks out knuckleball on day of Wakefield's death
Tim Wakefield, knuckleballer who made his pitches dance, dies at 57 - The Washington Post
R.A. Dickey, Tim Wakefield, Charlie Hough and the Art of the Knuckleball - SI Kids: Sports News for Kids, Kids Games and More
All-Star pitcher breaks out knuckleball on day of Wakefield's death