Knuckleball Clinic so good it hurts! The 16th Annual Las Vegas Knuckleball Clinic was a success with 17 pitchers flying in from as far away as Montreal. The kids learned that a professional Knuckleball registers 67 mph. This was their reaction. #knuckleballnation #howtoknuckleball #knuckleballmechanics #knuckleball #knuckleballtutorial #너클볼 #ナックルボール | Knuckleball Nation

Joe Zeller on Instagram: "One of the all-time great knuckleballers that paved the way The first reliever elected to the Hall of Fame Most appearances by a picture when he retired with 1070 Pitched until he was almost 50 years old And did it with shrapnel in his back from World War II Legend! #knuckleball #mlb #pitching"