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Reply to "Is cut on a four seam fastball a bad thing"

The "modern way" is that you want to eliminate cut on the 4 seamer, they want straight 12 6 backspin and little horizontal movement because that increases the "ride" or vertical lift on the ball.

The analytics guys call that spin efficiency and it is correlated with swing and miss somewhat.

However there are plenty of good pitchers with "inefficient" side to side moving fastballs with a gyro spin component and lower "active spin" levels.

Generally the believe is that vertical movement causes more swings and misses but horizontal movement while considered a bit old fashioned can be good too, it usually doesn't miss as many bats but it can cause weak contact.

Often cutter or fade two seamer pitchers have lower k rates but can compensate with more weak contact and less homers.

https://www.google.com/amp/s/t...-it-in-spades/%3famp

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