By A Mystery Man Writer
Mickey Jannis is among the next generation of baseball players committed to mastering the increasingly endangered pitch.
Glossary of baseball terms - Wikipedia
Carlton Fisk – South Side Hit Pen
Matt Waldron displays knuckler in MLB debut
WILBUR'S KNUCKLER IS ALIVE AND SWELL - Sports Illustrated Vault
Reds Hall of Fame, Alumni Directory
Rays Corey Kluber, the sweeper and the latest MLB pitching trend - Sports Illustrated
Tim Wakefield, who revived his career and Red Sox trophy case with knuckleball, has died at 57
These Instances Showcased Tim Wakefield As Ultimate Teammate
Who were some of the most fun baseball players to watch, even though they weren't Hall-of-Famers? - Quora
Éric Gagné - Wikipedia
These Instances Showcased Tim Wakefield As Ultimate Teammate
Matt Waldron displays knuckler in MLB debut
Meet the MLB pitchers keeping the dying art of the knuckleball alive - Sports Illustrated
Knuckler: My Life with Baseball's Most Confounding Pitch: Wakefield, Tim, Massarotti, Tony: 9780547517698: Books