Partner problems

[UMP25]

Originally posted by bob jenkins

Normal Mechanic:

PU waits to ask until defense asks.

Advanced Mechanic:

PU asks immediately when there's a check swing on an uncaught third strike and the batter can run (first open or two out).

Really Advanced Mechanic:

BU rules before being asked ONLY if it's a swing (if BU will agree with PU that it's not a swing, BU waits to be asked) on an uncaught third-strike when batter can run.

The situation I referred to is called a "voluntary strike."

As explained in 8.7 of the MLBUM:

Emphasis original:

In the situation where the third strike eludes the catcher on a half-swing and the batter-runner is entitled to run to first base, the appeal should be made to the base umpire instantly (without waiting for a request from the defense); but even if the appeal is not instant, the appropriate base umpire should immediately and voluntarily make a call of strike IF the base umpire is going to reverse the plate umpire's call. This will give the batter the immediate opportunity to run.