The first, more modern and commonly used pitch called the knuckle curve is really a standard curveball, thrown with one or more of the index or middle fingers bent. According to …

May 7, 2014 · First, let me define clearly what this study entails. A curveball is a pitch that, when thrown from a conventional arm angle, will drop from its normal trajectory due to topspin. It is …

A knuckle-curve, sometimes called a spike curve, is a variation of a traditional curveball, where the pitch is generally gripped and thrown like a curveball but with one knuckle raised off the …

May 8, 2014 · What is a knuckle-curveball? A curveball is a pitch that, when thrown from a conventional arm angle, will drop from its normal trajectory due to topspin. It is also typically …

If you want to learn how to throw a knuckle curveball, this video clears up myths about grips, spin, and much more.

Mar 18, 2025 · While a standard curveball relies on maximum spin and a specific finger placement, the knuckle curveball introduces a twist—one or more of the pitcher's fingers, …

Jun 12, 2025 · The knuckle-curve may not grab headlines like the slider or the splitter, but its effectiveness is undeniable. By marrying the speed deception of a fastball tunnel with the …

Mar 18, 2025 · A knuckle curveball involves a specific grip that raises the index finger's knuckle, which can create a different spin and trajectory compared to a traditional curveball.

May 7, 2014 · The two most important fingers in the curveball grip are usually the middle finger and the thumb. The middle finger and thumb rest on or beside seams on opposite sides of the …

Its movement is exactly the same as a properly thrown 12-6 curveball. Using the knuckle is just how some pitchers are able to get the necessary action on the ball.