Pickoffs and Holding Runners
A throw to a base to catch a leading runner off it.
How it actually works. A right-handed pitcher must step off the rubber or step directly toward the base, which is why his move is mostly about speed. A left-hander faces first base in his stretch and can hold his leg lift ambiguous, which is why the good ones are so hard to run on and why the balk rule exists at all. A back pick is the catcher's version, a throw behind a runner who has drifted too far on his secondary lead.
Why it is done, and when it is wrong. Almost no pickoff throw is trying to get an out. It is trying to shorten the lead by a step and to make the runner think, both of which cost him a fraction of a second on the jump, and that fraction is most of the stolen base. The pitcher who never throws over is handing runners the base, and the pitcher who throws over four times has told the whole park he is worried and has spent four pitches of his own rhythm on it.
What people get wrong about it. The real tell is time to the plate rather than the move to first. A pitcher who is slow to home cannot be saved by any pickoff move, and a pitcher who is quick to the plate barely needs one. Modern rules in the professional game also limit how many times a pitcher may disengage the rubber per plate appearance, which turned an unlimited tool into a resource he has to ration.
At Little League and travel ball. Pickoff moves are where balks are called in travel ball and where they are usually not called in Little League, and that difference catches out every pitcher who moves up. The left-handed move in particular is worth teaching early because it stays legal for a career.
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