Kurtenbach: Peak Posey — calling up Bryce Eldridge is the ultimate Buster move

This isn’t some cynical ploy to put butts in the seats.

It’s not a Hail Mary to stave off headline irrelevancy, either.

No, ahead of a week-long road trip and amid a playoff race, the San Francisco Giants are calling up their top prospect — power-hitting first baseman Bryce Eldridge — and they’re doing it for the purest of reasons:

They think he can be the difference.

And it’s the right button to push at exactly the right time for Giants director of baseball operations and eager button-pusher Buster Posey.