Pickoff
POA throw from the pitcher or catcher that retires a runner who has strayed off their base.
A pickoff retires a runner who is off the base and cannot get back. Most often it is the pitcher throwing to first from the set position; a catcher's snap throw behind a runner counts equally.
It is scored as a putout to the fielder applying the tag and an assist to whoever threw. If the runner breaks for the next base and is retired in the ensuing rundown, the play is scored as caught stealing instead.
In youth divisions where leadoffs are prohibited, pickoffs at first essentially disappear, though catchers can still catch a runner who leaves early.
Is a pickoff the same as caught stealing?
No. A pickoff retires a runner who strayed off the base without attempting to advance. If the runner breaks for the next base and is then retired, it is scored as caught stealing.
Let the scorebook keep itself.
Bleacher Notes scores every play from a single spoken sentence, applying these rules for you. In beta now, free for parents.