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Master · 2024-present · right-handed

Paul Skenes

The modern phenom whose splinker, a pitch he found by accident, is already one of the best in baseball.

Signature pitchSplinker

Skenes reached the majors in 2024 and was the NL Rookie of the Year that fall. His signature is the "splinker," a sinker-splitter hybrid his catcher named, thrown in the mid-90s with splitter-like dive off a 98 mph four-seam look. He still thinks of it as a sinker.

01The signature pitch

A "splinker," held with a light two-seam split rather than a deep splitter wedge, fired around 94 mph off a 98 mph four-seam look. Low spin gives it more drop than a normal splitter and arm-side run into right-handers; it leaves the hand on nearly the same path as the fastball, then falls.

He discovered the modern version by feel: the grip did not change, but the release and the feel at release did, on one random throw.

Study the splinker
The Splinker seam, oriented to its spin axis.

The splinker seam, our own schematic

02The mental edge

Skenes leans on deception by sameness, the splinker emerging on the same arm slot and release as his four-seam so hitters cannot tell the rising fastball from the diving hybrid out of the hand. He treats it as a confidence pitch, reaching for it in the highest-leverage counts and using it differently every outing.

I still think of it as a sinker. It’s funny to see guys swing at fastballs in the dirt.
Pitcher's own wordsMLB.com, Skenes' newest pitch is his confidence pitch (Alex Stumpf)/ 2024
03The record
Splinker velocity
about 94 mph

Roughly 4 mph under his four-seam and nearly 8 mph above the average MLB splitter.

Splinker spin rate
about 1,750 rpm

Far below the average sinker (about 2,150 rpm), which is why it behaves like neither a true sinker nor a true splitter.

Run value since debut
+18 (top-five pitch in baseball)
Opponent average vs. splinker (first 6 starts)

Filed the way every record here is: each figure season-stamped where it applies, confidence-labeled, and one click from its source. Where the reputation and the data disagree, the gap is shown, not smoothed over.