A knuckleball or knuckler is a baseball pitch thrown to minimize the spin of the ball in flight, causing an erratic, unpredictable motion. The air flow over a seam of the ball causes the ball to change from laminar to turbulent flow.

How does a knuckleball work physics?

The Zigzag Physics of the Knuckleball. ... A knuckleball is basically when a spherical projectile is hit or thrown such that the spin of the ball is minimized, creating an unpredictable zigzag trajectory that can catch the opposite team (as well as the players on one's own team) by surprise.

Why is a knuckleball hard to hit?

What makes this pitch so hard to hit? A knuckleball is famously difficult to throw, hit and catch because of its erratic behavior. It seems to fly through the air with no spin and then break suddenly in any direction. The ball's seams are key to this behavior.

How much do knuckle balls move?

Usually, a knuckleball rotates one to three times on its way to the batter, and the ball usually spins about an approximately vertical axis – that is, with side spin.

How fast did Gibson pitch?

How fast was Bob Gibson's Fastball? Bob Gibson's 4-seam fastball “sat” between 92-95 mph in the sample I considered. It's likely he actively varied his grip or intended velocity, producing a high velocity range, measured at 87-95, with numerous indications that he regularly exceeded 95 mph.

How does a Knuckleball Work? The Science of the Knuckleball

15 related questions found

Are Knuckleballs allowed?

Boston Red Sox right-hander Steven Wright is the only active knuckleballer in major league baseball, and he has been limited this season by a suspension and injuries. A knuckleballer has yet to record a victory this year.

What is the rarest pitch in baseball?

A screwball is a breaking ball designed to move in the opposite direction of just about every other breaking pitch. It is one of the rarest pitches thrown in baseball, mostly because of the tax it can put on a pitcher's arm.

Who throws the best knuckleball?

Phil Niekro

Phil is probably the best known knuckleball pitcher. He took the mound for nearly a quarter of a century using the arm-saving pitch. Between 1964 and 1987, Phil racked up 318 wins (the most by a knuckleball pitcher), struck out over 3,000 and had a ERA of 3.35.

What happens when a pitcher balks?

Definition. A balk occurs when a pitcher makes an illegal motion on the mound that the umpire deems to be deceitful to the runner(s). As a result, any men on base are awarded the next base, and the pitch (if it was thrown in the first place) is waved off for a dead ball.

How does a knuckleball not spin?

According to phys.org, the swerve that makes a knuckleball almost impossible for a goalkeeper to save is caused by the air around the ball. Since a ball is a smooth sphere, the forces caused by aerodynamic lift fluctuate as the ball travels towards the goal in its straight path.

Whats the science behind a knuckleball?

A "knuckleball" in soccer refers to a ball kicked at very low spin, which results in a zigzag trajectory. Along its straight path, the ball deviates laterally by roughly the diameter of a ball (0.2 m). ... They discovered that the knuckleball phenomenon occurs, but at much shorter distances.

Can you hit a balk?

When a balk is made on a pitch that is a fourth ball it shall be ruled the same as when the batter hits a balk pitch and is safe on a hit or error, provided all runners advance at least one base on the play.

Can a left handed pitcher fake to first?

The same is true here for lefties – if a lefthanded pitcher steps back off the rubber and then fakes a throw to first, it's perfectly legal. The pick off move where this happens is called the snap throw.

Can you fake to third and throw first in high school?

Since it is legal by NFHS rules to “feint” to third, it is legal to throw to a fielder who is not in position to make a play.

Does anyone throw a screwball?

So did a perfect game in 1988 by the occasional screwballer Tom Browning of Cincinnati. You could spot the pitch well into this century, but over time it died out. Four months into the season, it's safe to say that Santiago is the only pitcher who has thrown the screwball in a game this year.

How does Tim Wakefield grip his knuckleball?

Wakefield uses a 2-finger grip, but some younger kids need to use 3 fingers until their hands get bigger. Place the index and middle fingers slightly apart across (not along — that's a 2-seamer) the large curvature of the seam, known as the “horseshoe.” Then, visualize a straight line to the target.

Do any MLB Players throw a knuckleball?

The knuckleball pitcher has vanished from the major leagues, an artifact like paper tickets and contact hitters. Of the 617 men to throw a pitch in the majors this season through Wednesday, according to Fangraphs, only four have thrown a knuckleball — and all four were position players.

What is the nastiest pitch in baseball?

• Clayton Kershaw: Curveball. 9 of 11.
• Matt Harvey: Fastball. 8 of 11. ...
• Adam Wainwright: Curveball. 7 of 11. ...
• Jose Fernandez: Curveball. 6 of 11. ...
• Travis Wood: Cutter. 5 of 11. ...
• Aroldis Chapman: Slider. 4 of 11. ...
• Jeff Locke: 2-Seam Fastball. 3 of 11. ...
• Cole Hamels: Changeup. 2 of 11. ...

Are there any illegal pitches in baseball?

If a pitcher commits an illegal pitch the ball is immediately dead and a ball is added to the hitters count. If the illegal pitch occurs while a runner is on base, that is a balk and all runners will be awarded one base.

What is a gyroball pitch in baseball?

A gyroball is a type of baseball pitch used primarily by players in Japan. It is thrown with a spiral-like spin, so that there is no Magnus force on the ball as it arrives at home plate. The gyroball is sometimes confused with the shuuto, another pitch used in Japan.

Is throwing a knuckleball bad for your arm?

Because the pitch travels at 60 mph to maybe 80 mph, throwing that "softly" puts far less stress on an arm than throwing 90 mph or above. So the knuckleball can be very effective. It can resurrect pitchers' careers. It can keep guys in the majors who might otherwise have been out of baseball years earlier.

Is knuckleball dead?

On a related note, the knuckleball is essentially extinct. The website Fangraphs, which tracks every pitch, counted only three pitchers who threw the knuckleball in 2020: Erik Kratz, Todd Frazier and Bryan Holaday, position players moonlighting as pitchers at the end of blowouts.

Who was the last knuckleball pitcher?

The injury list is extensive, including Tommy John Surgery, but until recently, Wright was the last of the knuckleball breed to pitch in MLB. The Baltimore Orioles brought in a 33-year-old righty Mickey Jannis for a taste of big-league action recently.

Can a catcher throw to an unoccupied base?

First - even in baseball the pitcher can throw to the base where the runner WAS, and the catcher can throw to ANY base. Second - in softball there are no such rules (the pitcher can't throw ANYwhere) at all. The catcher (in both sports) is simply an infielder trying to make a play.