knuckleball in cricket

Kicked with very little spin, the unpredictable movement is the result of what is usually labelled the "knuckle effect." A side force, or swing, will only be generated if there is a pressure difference between the two sides of the ball.

However, there is video evidence that the former Indian fast bowler Zaheer Khan was able to develop a slower delivery with very little spin on the ball.So what is the science behind the knuckling effect?As the ball flies, a thin layer of air called the "boundary layer" forms along its surface. Many batsmen struggle to analyse the knuckleball as the grip of the ball is not easily noticeable due to which the pace of the ball varies. The knuckleball, or knuckler, will sometimes move in more than one direction before it reaches the batter.

What is clear, however, is that they are not knuckleballs of the baseball type, as there is too much rotation. That should be motivation enough for bowlers to try mastering it.

Admittedly, transferring the knuckleball technique to cricket may present challenges. A side force, or swing, will only be generated if there is a pressure difference between the two sides of the ball. In 1991, Hall of Fame catcher Rick Ferrell was quoted as saying, "I think the knuckleball is fading out." Two hundred and fifty used to be a highly competitive one-day total; nowadays totals approaching 400 are not uncommon.While batsmen have been feted and fattened, bowlers have been left to fend for themselves and to rely on their own resourcefulness.Here is another suggestion for them to consider: how about taking a look at the mysterious pitch in baseball known as the knuckleball?Often referred to as "unhittable" because of its unpredictable movement, the knuckleball also presents a challenge to catchers, and to umpires determining balls and strikes.The pitch is thrown in such a way as to almost totally eliminate spin on the ball.

The seam on a baseball or cricket ball acts to disturb the boundary layer, and hence affects at what point the separation occurs.As the very slowly spinning ball is flying through the air, the rotating seam will affect the boundary layer in different ways on different parts of the ball.

Unsurprisingly, whenever batters manage to hit one, they often admit that it is more a case of ball hitting bat than the other way around.Admittedly, transferring the knuckleball technique to cricket may present challenges. There are only slight differences between the balls used in each sport in terms of size and weight, but the cricket ball is harder and has a shinier finish when new, which probably makes it more troublesome to grip. Then the knuckleball is bowled. Zaheer's knuckleball, for example, was observed to dip sharply since there was no upwards It is likely that bowlers will need to train a lot to get adept at delivering a knuckleball. As similar to a slower ball, the bowler's intention is to deceive the batter into playing too early so that they either miss the ball completely or hit …

For the 2012 documentary film, see In the sport of cricket, a knuckle ball (or knuckleball) is a type of delivery employed by a fast bowler, and a type of slower ball. To make the delivery successful, three-four deliveries are bowled fast. That should be motivation enough for bowlers to try mastering it. Usually scored from a distance, the ball appears to change direction randomly, leaving the goalkeeper with little chance. When delivered with the fingernails, there is hardly any rotational spin and the ball wobbles to the batsman before it dips alarmingly at a much slower pace. Once mastered, however, the delivery should yield significant dividends.

The batter keeps his eye on the ball but cannot believe what it is doing, seeming of its own volition. Spinners could use it as a variation, fast bowlers as a slower ball. The physics of the operation are largely the same. At the point of release the fingers are extended outwards in an attempt to minimise any kind of rotation. This layer cannot stay attached to the ball's surface all the way around, so it tends to leave or "separate" from the surface at some point.

Or, as is the case with pitchers in baseball, some bowlers could use it as their sole stock in trade.Imagine the first true knuckleball bowler in operation in an international match with the ball dancing and dropping in ways not previously witnessed in cricket. This was most evident in the 2010 World Cup when the players constantly complained about the excessive knuckling of the Jabulani ball.Since it is normally thrown at between 65mph and 75mph approximately, a knuckleball that fails to knuckle will be relatively easy to hit. Flatter pitches, fatter bats, shorter boundaries, fielding restrictions, free hits and Powerplays have all resulted in higher batting averages and faster scoring rates. However, the seam on a cricket ball is equatorial, and thus the extent of erratic movement is reduced due to the symmetry (at least in the conventional release position where the planes of the ball's trajectory and the seam are nearly co-planar). The knuckleball has only been mastered by a tiny minority in Major League Baseball, as it’s incredibly hard to throw with precision.

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