obstruction on a pickoff ?

[DG]

Originally Posted by FTVMartin

If he is blocking the base during the pickoff attempt, isn't that considered "in the act of making a play." We allow catchers to do it at the plate so why not a first baseman?

A play has to be imminent at the plate for a catcher to be able to block the plate without the ball. That generally means the thrown ball is in fllight and nearly at the plate, over the dirt cutout part is generally considered imminent since the cutout is about 13' in diameter.

Likewise at 1B a play would have to be imminent. If F3 is blocking the bag when the pitcher starts to make a move then a play is not imminent because the ball hasn't even been thrown yet. So it's obstruction if the runner can't get to the bag.