[nzumpire]

Your scenario is not an obstruction call until.. the player blocks the base without the ball.

The fielder is required to give the offense a view of the base. Clearly if they are stradling the base, the offence has the view.

If the play is to be that close that the fielder would elect to straddle the base, then the offense would be looking to slide. .. it must be close, else why would the fielder set him/herself up to create such an obvious obstruction!!!!!!

Get in the game you guys..

We are here to make the decisions that the game can't make for itself. Not make decisions on a play that may not actually occur before it happens.

A TCU once said " see the play and call the play"