How do you handle this

[EsqUmp]

You need to do what is right as the base umpire. You don't deviate from proper mechanics because of your partner's poor mechanics.

Umpires don't learn mechanics when someone else substitutes and covers.

Speak with the umpire, ask him how far up his a$$ his head was. He shouldn't be standing directly behind home plate to begin with. The ball has to go 200 feet out and 200 feet back, and the umpire probably didn't take 1 step for every 100 feet the ball traveled.

[MD Longhorn]

I disagree on pre-gaming this... this is standard. Pregaming what PU should do when BU goes out is like pregaming that you'll be in B with a runner on first. It's basic. You pregame the optional stuff or the weird stuff... not the baby stuff.

PU screwed the pooch.

That said, in your situation, I would hesitate and then once you realize he's not going to make a call, make it. Then when the inning is over, discuss it with him. If he was just asleep at the wheel, move on... if he's not qualified for this game and NEEDS to be spoon fed the baby stuff, do it.

But don't refuse to go out the rest of the game because he screwed up once. This is the equivalent of deciding to make fair/foul calls because you saw him miss one.