Savvy baseball fans know the difference between a cutter and a slider, but what differentiates the two pitches is a mystery to many. Roger McDowell and Randy St. Claire understand the nuances of both. Former big-league relievers, they now serve as pitching coaches for the Atlanta Braves and Miami Marlins, respectively.
McDowell and St. Claire discussed the ins and outs of the cutter — and its hybrid cousin, the slider — in separate interviews last month.
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THE CUTTER
St. Claire: “For me, a cutter is a fastball that’s moving. It runs in on that left-handed hitter’s hands. There is velocity to it, and there is no spin to the ball that you can pick up. A slider has spin and usually a tight dot to it. It’s usually when you throw a poor slider that it gets hit. On a cutter, the hitter does not pick up the spin on the ball. At the last, just before contact, the ball is sliding. For a left-hander it’s sliding to the right, and for a right-hander it’s sliding to the left. It’s very short break, too. A cutter is a contact pitch that makes them mis-hit the ball.”
McDowell: “Basically, you just take a four-seam fastball and offset it. It’s a very small offset from your four-seam fastball. You make a very slight turn — I guess it would be horizontal. You basically turn the seams. On a four-seam fastball, you’re gripping across the seams, and a cutter would be a slight angle off the four seams. You get a natural movement from that without having to do anything at the end, like on a curveball or a slider, where there’s a turn in your wrist. There’s more of a turn in the wrist on a curveball than a slider, but you can get away from that, just by off-setting a fastball, and hopefully it will cut.”
ACCIDENTAL CUTTERS
St. Claire: “The more you start manipulating the ball to get it to cut, the more velocity you lose on the ball. Read the rest of this entry »