Posterior.
OBR 5.07(c) · OBR 6.02(a)

Pickoff and disengagement limit

The pitcher may disengage from the rubber — a pickoff throw or a step-off — only twice per plate appearance while runners are on. A third disengagement has to produce an out, or it's a balk and the runners advance.

Key points
  • Two free disengagements per plate appearance. The count resets if a runner advances (for example on a stolen base).
  • On a third pickoff throw, the pitcher is fine if the runner is actually tagged out — otherwise it is a balk.
  • Stepping off to reset the timer counts as a disengagement.
  • Runners know the count too — expect bigger leads once a pitcher has used both.
In a game

Pitcher throws over to first twice, then steps off the rubber to reset the timer.

Ruling · That is a third disengagement with no out recorded — a balk, and the runner takes second.

Why it moves the scoreboard

Directly manufactures baserunner movement: a third failed disengagement is a balk and a free base, and depleted disengagements invite stolen bases.

Reference note: one or more section citations on this page are being verified against the current official rulebook edition. The explanation reflects the rule as played; confirm the exact subsection in the official text.

Related rules